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Finding the Fourth Proportional to 123,397.56, 185,322.30 and 112,987.44

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Solution

The fourth proportional to 123,397.56, 185,322.30 and 112,987.44 is: 169,688.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,397.56 : 185,322.30 = 112,987.44 : x
  2. Step 2: Convert to fraction form
    123,397.56/185,322.30 = 112,987.44/x
  3. Step 3: Cross multiply
    123,397.56x = 185,322.30 × 112,987.44
  4. Step 4: Simplify right side
    123,397.56x = 20,939,092,251.91
  5. Step 5: Solve for x
    x = 20,939,092,251.91/123,397.56
  6. Step 6: Final answer
    x = 169,688.06

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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.