Home / 129,248.28-178,366.76-78,270.52

Finding the Fourth Proportional to 129,248.28, 178,366.76 and 78,270.52

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Solution

The fourth proportional to 129,248.28, 178,366.76 and 78,270.52 is: 108,015.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,248.28 : 178,366.76 = 78,270.52 : x
  2. Step 2: Convert to fraction form
    129,248.28/178,366.76 = 78,270.52/x
  3. Step 3: Cross multiply
    129,248.28x = 178,366.76 × 78,270.52
  4. Step 4: Simplify right side
    129,248.28x = 13,960,859,055.92
  5. Step 5: Solve for x
    x = 13,960,859,055.92/129,248.28
  6. Step 6: Final answer
    x = 108,015.82

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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.