Home / 125,839.92-173,663.22-72,135.10

Finding the Fourth Proportional to 125,839.92, 173,663.22 and 72,135.10

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Solution

The fourth proportional to 125,839.92, 173,663.22 and 72,135.10 is: 99,548.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,839.92 : 173,663.22 = 72,135.10 : x
  2. Step 2: Convert to fraction form
    125,839.92/173,663.22 = 72,135.10/x
  3. Step 3: Cross multiply
    125,839.92x = 173,663.22 × 72,135.10
  4. Step 4: Simplify right side
    125,839.92x = 12,527,213,741.02
  5. Step 5: Solve for x
    x = 12,527,213,741.02/125,839.92
  6. Step 6: Final answer
    x = 99,548.81

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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.