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Finding the Fourth Proportional to 87,995.94, 130,861.94 and 85,193.40

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Solution

The fourth proportional to 87,995.94, 130,861.94 and 85,193.40 is: 126,694.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,995.94 : 130,861.94 = 85,193.40 : x
  2. Step 2: Convert to fraction form
    87,995.94/130,861.94 = 85,193.40/x
  3. Step 3: Cross multiply
    87,995.94x = 130,861.94 × 85,193.40
  4. Step 4: Simplify right side
    87,995.94x = 11,148,573,173.23
  5. Step 5: Solve for x
    x = 11,148,573,173.23/87,995.94
  6. Step 6: Final answer
    x = 126,694.18

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.