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Finding the Fourth Proportional to 123,358.55, 185,044.43 and 39,125.11

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Solution

The fourth proportional to 123,358.55, 185,044.43 and 39,125.11 is: 58,689.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,358.55 : 185,044.43 = 39,125.11 : x
  2. Step 2: Convert to fraction form
    123,358.55/185,044.43 = 39,125.11/x
  3. Step 3: Cross multiply
    123,358.55x = 185,044.43 × 39,125.11
  4. Step 4: Simplify right side
    123,358.55x = 7,239,883,678.64
  5. Step 5: Solve for x
    x = 7,239,883,678.64/123,358.55
  6. Step 6: Final answer
    x = 58,689.76

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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.