Home / 123,108.42-169,902.68-72,163.96

Finding the Fourth Proportional to 123,108.42, 169,902.68 and 72,163.96

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Solution

The fourth proportional to 123,108.42, 169,902.68 and 72,163.96 is: 99,593.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,108.42 : 169,902.68 = 72,163.96 : x
  2. Step 2: Convert to fraction form
    123,108.42/169,902.68 = 72,163.96/x
  3. Step 3: Cross multiply
    123,108.42x = 169,902.68 × 72,163.96
  4. Step 4: Simplify right side
    123,108.42x = 12,260,850,203.41
  5. Step 5: Solve for x
    x = 12,260,850,203.41/123,108.42
  6. Step 6: Final answer
    x = 99,593.92

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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.