Home / 87,312.92-131,060.98-77,381.20

Finding the Fourth Proportional to 87,312.92, 131,060.98 and 77,381.20

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Solution

The fourth proportional to 87,312.92, 131,060.98 and 77,381.20 is: 116,152.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,312.92 : 131,060.98 = 77,381.20 : x
  2. Step 2: Convert to fraction form
    87,312.92/131,060.98 = 77,381.20/x
  3. Step 3: Cross multiply
    87,312.92x = 131,060.98 × 77,381.20
  4. Step 4: Simplify right side
    87,312.92x = 10,141,655,905.58
  5. Step 5: Solve for x
    x = 10,141,655,905.58/87,312.92
  6. Step 6: Final answer
    x = 116,152.98

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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.