Home / 87,138.92-130,788.54-53,923.88

Finding the Fourth Proportional to 87,138.92, 130,788.54 and 53,923.88

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Solution

The fourth proportional to 87,138.92, 130,788.54 and 53,923.88 is: 80,935.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,138.92 : 130,788.54 = 53,923.88 : x
  2. Step 2: Convert to fraction form
    87,138.92/130,788.54 = 53,923.88/x
  3. Step 3: Cross multiply
    87,138.92x = 130,788.54 × 53,923.88
  4. Step 4: Simplify right side
    87,138.92x = 7,052,625,536.34
  5. Step 5: Solve for x
    x = 7,052,625,536.34/87,138.92
  6. Step 6: Final answer
    x = 80,935.43

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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.