Home / 139,225.38-192,126.15-75,561.90

Finding the Fourth Proportional to 139,225.38, 192,126.15 and 75,561.90

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Solution

The fourth proportional to 139,225.38, 192,126.15 and 75,561.90 is: 104,272.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,225.38 : 192,126.15 = 75,561.90 : x
  2. Step 2: Convert to fraction form
    139,225.38/192,126.15 = 75,561.90/x
  3. Step 3: Cross multiply
    139,225.38x = 192,126.15 × 75,561.90
  4. Step 4: Simplify right side
    139,225.38x = 14,517,416,933.69
  5. Step 5: Solve for x
    x = 14,517,416,933.69/139,225.38
  6. Step 6: Final answer
    x = 104,272.78

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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.