Home / 102,550.88-141,584.28-78,631.58

Finding the Fourth Proportional to 102,550.88, 141,584.28 and 78,631.58

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Solution

The fourth proportional to 102,550.88, 141,584.28 and 78,631.58 is: 108,560.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,550.88 : 141,584.28 = 78,631.58 : x
  2. Step 2: Convert to fraction form
    102,550.88/141,584.28 = 78,631.58/x
  3. Step 3: Cross multiply
    102,550.88x = 141,584.28 × 78,631.58
  4. Step 4: Simplify right side
    102,550.88x = 11,132,995,639.56
  5. Step 5: Solve for x
    x = 11,132,995,639.56/102,550.88
  6. Step 6: Final answer
    x = 108,560.70

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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.