Home / 136,960.43-189,024.17-78,815.97

Finding the Fourth Proportional to 136,960.43, 189,024.17 and 78,815.97

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Solution

The fourth proportional to 136,960.43, 189,024.17 and 78,815.97 is: 108,776.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,960.43 : 189,024.17 = 78,815.97 : x
  2. Step 2: Convert to fraction form
    136,960.43/189,024.17 = 78,815.97/x
  3. Step 3: Cross multiply
    136,960.43x = 189,024.17 × 78,815.97
  4. Step 4: Simplify right side
    136,960.43x = 14,898,124,217.88
  5. Step 5: Solve for x
    x = 14,898,124,217.88/136,960.43
  6. Step 6: Final answer
    x = 108,776.85

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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.