Home / 87,711.90-131,567.85-70,215.90

Finding the Fourth Proportional to 87,711.90, 131,567.85 and 70,215.90

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Solution

The fourth proportional to 87,711.90, 131,567.85 and 70,215.90 is: 105,323.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,711.90 : 131,567.85 = 70,215.90 : x
  2. Step 2: Convert to fraction form
    87,711.90/131,567.85 = 70,215.90/x
  3. Step 3: Cross multiply
    87,711.90x = 131,567.85 × 70,215.90
  4. Step 4: Simplify right side
    87,711.90x = 9,238,154,998.82
  5. Step 5: Solve for x
    x = 9,238,154,998.82/87,711.90
  6. Step 6: Final answer
    x = 105,323.85

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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.