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Finding the Fourth Proportional to 123,728.90, 185,593.35 and 92,236.10

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Solution

The fourth proportional to 123,728.90, 185,593.35 and 92,236.10 is: 138,354.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,728.90 : 185,593.35 = 92,236.10 : x
  2. Step 2: Convert to fraction form
    123,728.90/185,593.35 = 92,236.10/x
  3. Step 3: Cross multiply
    123,728.90x = 185,593.35 × 92,236.10
  4. Step 4: Simplify right side
    123,728.90x = 17,118,406,789.94
  5. Step 5: Solve for x
    x = 17,118,406,789.94/123,728.90
  6. Step 6: Final answer
    x = 138,354.15

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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.