Home / 87,165.12-130,747.76-60,921.12

Finding the Fourth Proportional to 87,165.12, 130,747.76 and 60,921.12

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Solution

The fourth proportional to 87,165.12, 130,747.76 and 60,921.12 is: 91,381.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,165.12 : 130,747.76 = 60,921.12 : x
  2. Step 2: Convert to fraction form
    87,165.12/130,747.76 = 60,921.12/x
  3. Step 3: Cross multiply
    87,165.12x = 130,747.76 × 60,921.12
  4. Step 4: Simplify right side
    87,165.12x = 7,965,299,976.69
  5. Step 5: Solve for x
    x = 7,965,299,976.69/87,165.12
  6. Step 6: Final answer
    x = 91,381.74

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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.