Home / 87,170.92-130,643.98-42,181.70

Finding the Fourth Proportional to 87,170.92, 130,643.98 and 42,181.70

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Solution

The fourth proportional to 87,170.92, 130,643.98 and 42,181.70 is: 63,218.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,170.92 : 130,643.98 = 42,181.70 : x
  2. Step 2: Convert to fraction form
    87,170.92/130,643.98 = 42,181.70/x
  3. Step 3: Cross multiply
    87,170.92x = 130,643.98 × 42,181.70
  4. Step 4: Simplify right side
    87,170.92x = 5,510,785,171.17
  5. Step 5: Solve for x
    x = 5,510,785,171.17/87,170.92
  6. Step 6: Final answer
    x = 63,218.16

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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.