Home / 87,624.10-131,436.15-70,128.10

Finding the Fourth Proportional to 87,624.10, 131,436.15 and 70,128.10

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Solution

The fourth proportional to 87,624.10, 131,436.15 and 70,128.10 is: 105,192.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,624.10 : 131,436.15 = 70,128.10 : x
  2. Step 2: Convert to fraction form
    87,624.10/131,436.15 = 70,128.10/x
  3. Step 3: Cross multiply
    87,624.10x = 131,436.15 × 70,128.10
  4. Step 4: Simplify right side
    87,624.10x = 9,217,367,470.82
  5. Step 5: Solve for x
    x = 9,217,367,470.82/87,624.10
  6. Step 6: Final answer
    x = 105,192.15

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1.5x scale

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.