Home / 136,926.70-188,940.15-76,489.87

Finding the Fourth Proportional to 136,926.70, 188,940.15 and 76,489.87

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Solution

The fourth proportional to 136,926.70, 188,940.15 and 76,489.87 is: 105,545.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,926.70 : 188,940.15 = 76,489.87 : x
  2. Step 2: Convert to fraction form
    136,926.70/188,940.15 = 76,489.87/x
  3. Step 3: Cross multiply
    136,926.70x = 188,940.15 × 76,489.87
  4. Step 4: Simplify right side
    136,926.70x = 14,452,007,511.28
  5. Step 5: Solve for x
    x = 14,452,007,511.28/136,926.70
  6. Step 6: Final answer
    x = 105,545.58

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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.