Home / 83,328.13-124,992.19-20,998.63

Finding the Fourth Proportional to 83,328.13, 124,992.19 and 20,998.63

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Solution

The fourth proportional to 83,328.13, 124,992.19 and 20,998.63 is: 31,497.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,328.13 : 124,992.19 = 20,998.63 : x
  2. Step 2: Convert to fraction form
    83,328.13/124,992.19 = 20,998.63/x
  3. Step 3: Cross multiply
    83,328.13x = 124,992.19 × 20,998.63
  4. Step 4: Simplify right side
    83,328.13x = 2,624,664,125.74
  5. Step 5: Solve for x
    x = 2,624,664,125.74/83,328.13
  6. Step 6: Final answer
    x = 31,497.94

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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.