Home / 87,102.12-130,549.18-60,663.72

Finding the Fourth Proportional to 87,102.12, 130,549.18 and 60,663.72

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Solution

The fourth proportional to 87,102.12, 130,549.18 and 60,663.72 is: 90,923.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,102.12 : 130,549.18 = 60,663.72 : x
  2. Step 2: Convert to fraction form
    87,102.12/130,549.18 = 60,663.72/x
  3. Step 3: Cross multiply
    87,102.12x = 130,549.18 × 60,663.72
  4. Step 4: Simplify right side
    87,102.12x = 7,919,598,901.75
  5. Step 5: Solve for x
    x = 7,919,598,901.75/87,102.12
  6. Step 6: Final answer
    x = 90,923.15

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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.