Home / 84,012,799.50-126,019,199.25-20,187,391.50

Finding the Fourth Proportional to 84,012,799.50, 126,019,199.25 and 20,187,391.50

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Solution

The fourth proportional to 84,012,799.50, 126,019,199.25 and 20,187,391.50 is: 30,281,087.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,012,799.50 : 126,019,199.25 = 20,187,391.50 : x
  2. Step 2: Convert to fraction form
    84,012,799.50/126,019,199.25 = 20,187,391.50/x
  3. Step 3: Cross multiply
    84,012,799.50x = 126,019,199.25 × 20,187,391.50
  4. Step 4: Simplify right side
    84,012,799.50x = 2,543,998,911,776,256.50
  5. Step 5: Solve for x
    x = 2,543,998,911,776,256.50/84,012,799.50
  6. Step 6: Final answer
    x = 30,281,087.25

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.