Home / 139,781.88-192,902.45-76,123.17

Finding the Fourth Proportional to 139,781.88, 192,902.45 and 76,123.17

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Solution

The fourth proportional to 139,781.88, 192,902.45 and 76,123.17 is: 105,051.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,781.88 : 192,902.45 = 76,123.17 : x
  2. Step 2: Convert to fraction form
    139,781.88/192,902.45 = 76,123.17/x
  3. Step 3: Cross multiply
    139,781.88x = 192,902.45 × 76,123.17
  4. Step 4: Simplify right side
    139,781.88x = 14,684,345,614.15
  5. Step 5: Solve for x
    x = 14,684,345,614.15/139,781.88
  6. Step 6: Final answer
    x = 105,051.85

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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.