Home / 131,461.92-197,242.56-78,908.04

Finding the Fourth Proportional to 131,461.92, 197,242.56 and 78,908.04

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Solution

The fourth proportional to 131,461.92, 197,242.56 and 78,908.04 is: 118,391.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,461.92 : 197,242.56 = 78,908.04 : x
  2. Step 2: Convert to fraction form
    131,461.92/197,242.56 = 78,908.04/x
  3. Step 3: Cross multiply
    131,461.92x = 197,242.56 × 78,908.04
  4. Step 4: Simplify right side
    131,461.92x = 15,564,023,814.18
  5. Step 5: Solve for x
    x = 15,564,023,814.18/131,461.92
  6. Step 6: Final answer
    x = 118,391.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.