Home / 136,926.52-188,940-76,489.72

Finding the Fourth Proportional to 136,926.52, 188,940 and 76,489.72

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Solution

The fourth proportional to 136,926.52, 188,940 and 76,489.72 is: 105,545.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,926.52 : 188,940 = 76,489.72 : x
  2. Step 2: Convert to fraction form
    136,926.52/188,940 = 76,489.72/x
  3. Step 3: Cross multiply
    136,926.52x = 188,940 × 76,489.72
  4. Step 4: Simplify right side
    136,926.52x = 14,451,967,696.80
  5. Step 5: Solve for x
    x = 14,451,967,696.80/136,926.52
  6. Step 6: Final answer
    x = 105,545.42

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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.