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Finding the Fourth Proportional to 123,060.53, 169,744.73 and 77,658.41

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Solution

The fourth proportional to 123,060.53, 169,744.73 and 77,658.41 is: 107,118.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,060.53 : 169,744.73 = 77,658.41 : x
  2. Step 2: Convert to fraction form
    123,060.53/169,744.73 = 77,658.41/x
  3. Step 3: Cross multiply
    123,060.53x = 169,744.73 × 77,658.41
  4. Step 4: Simplify right side
    123,060.53x = 13,182,104,600.66
  5. Step 5: Solve for x
    x = 13,182,104,600.66/123,060.53
  6. Step 6: Final answer
    x = 107,118.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.