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Finding the Fourth Proportional to 87,502.80, 131,254.20 and 84,910.80

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Solution

The fourth proportional to 87,502.80, 131,254.20 and 84,910.80 is: 127,366.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,502.80 : 131,254.20 = 84,910.80 : x
  2. Step 2: Convert to fraction form
    87,502.80/131,254.20 = 84,910.80/x
  3. Step 3: Cross multiply
    87,502.80x = 131,254.20 × 84,910.80
  4. Step 4: Simplify right side
    87,502.80x = 11,144,899,125.36
  5. Step 5: Solve for x
    x = 11,144,899,125.36/87,502.80
  6. Step 6: Final answer
    x = 127,366.20

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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.