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Finding the Fourth Proportional to 123,650.64, 185,489.58 and 39,391.20

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Solution

The fourth proportional to 123,650.64, 185,489.58 and 39,391.20 is: 59,091.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,650.64 : 185,489.58 = 39,391.20 : x
  2. Step 2: Convert to fraction form
    123,650.64/185,489.58 = 39,391.20/x
  3. Step 3: Cross multiply
    123,650.64x = 185,489.58 × 39,391.20
  4. Step 4: Simplify right side
    123,650.64x = 7,306,657,143.70
  5. Step 5: Solve for x
    x = 7,306,657,143.70/123,650.64
  6. Step 6: Final answer
    x = 59,091.14

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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.