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Finding the Fourth Proportional to 87,145.89, 130,718.84 and 60,901.89

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Solution

The fourth proportional to 87,145.89, 130,718.84 and 60,901.89 is: 91,352.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,145.89 : 130,718.84 = 60,901.89 : x
  2. Step 2: Convert to fraction form
    87,145.89/130,718.84 = 60,901.89/x
  3. Step 3: Cross multiply
    87,145.89x = 130,718.84 × 60,901.89
  4. Step 4: Simplify right side
    87,145.89x = 7,961,024,414.61
  5. Step 5: Solve for x
    x = 7,961,024,414.61/87,145.89
  6. Step 6: Final answer
    x = 91,352.84

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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.