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Finding the Fourth Proportional to 123,487.74, 185,141.70 and 39,220.20

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Solution

The fourth proportional to 123,487.74, 185,141.70 and 39,220.20 is: 58,801.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,487.74 : 185,141.70 = 39,220.20 : x
  2. Step 2: Convert to fraction form
    123,487.74/185,141.70 = 39,220.20/x
  3. Step 3: Cross multiply
    123,487.74x = 185,141.70 × 39,220.20
  4. Step 4: Simplify right side
    123,487.74x = 7,261,294,502.34
  5. Step 5: Solve for x
    x = 7,261,294,502.34/123,487.74
  6. Step 6: Final answer
    x = 58,801.74

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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.