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Finding the Fourth Proportional to 123,356.54, 185,041.43 and 39,123.11

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Solution

The fourth proportional to 123,356.54, 185,041.43 and 39,123.11 is: 58,686.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,356.54 : 185,041.43 = 39,123.11 : x
  2. Step 2: Convert to fraction form
    123,356.54/185,041.43 = 39,123.11/x
  3. Step 3: Cross multiply
    123,356.54x = 185,041.43 × 39,123.11
  4. Step 4: Simplify right side
    123,356.54x = 7,239,396,487.44
  5. Step 5: Solve for x
    x = 7,239,396,487.44/123,356.54
  6. Step 6: Final answer
    x = 58,686.77

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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.