Home / 84,764.70-127,147.05-69,990.30

Finding the Fourth Proportional to 84,764.70, 127,147.05 and 69,990.30

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Solution

The fourth proportional to 84,764.70, 127,147.05 and 69,990.30 is: 104,985.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,764.70 : 127,147.05 = 69,990.30 : x
  2. Step 2: Convert to fraction form
    84,764.70/127,147.05 = 69,990.30/x
  3. Step 3: Cross multiply
    84,764.70x = 127,147.05 × 69,990.30
  4. Step 4: Simplify right side
    84,764.70x = 8,899,060,173.62
  5. Step 5: Solve for x
    x = 8,899,060,173.62/84,764.70
  6. Step 6: Final answer
    x = 104,985.45

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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.