Home / 87,815.28-131,416.68-71,835.60

Finding the Fourth Proportional to 87,815.28, 131,416.68 and 71,835.60

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Solution

The fourth proportional to 87,815.28, 131,416.68 and 71,835.60 is: 107,502.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,815.28 : 131,416.68 = 71,835.60 : x
  2. Step 2: Convert to fraction form
    87,815.28/131,416.68 = 71,835.60/x
  3. Step 3: Cross multiply
    87,815.28x = 131,416.68 × 71,835.60
  4. Step 4: Simplify right side
    87,815.28x = 9,440,396,057.81
  5. Step 5: Solve for x
    x = 9,440,396,057.81/87,815.28
  6. Step 6: Final answer
    x = 107,502.89

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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.