Home / 87,063.90-120,127.20-55,221.18

Finding the Fourth Proportional to 87,063.90, 120,127.20 and 55,221.18

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Solution

The fourth proportional to 87,063.90, 120,127.20 and 55,221.18 is: 76,191.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,063.90 : 120,127.20 = 55,221.18 : x
  2. Step 2: Convert to fraction form
    87,063.90/120,127.20 = 55,221.18/x
  3. Step 3: Cross multiply
    87,063.90x = 120,127.20 × 55,221.18
  4. Step 4: Simplify right side
    87,063.90x = 6,633,565,734.10
  5. Step 5: Solve for x
    x = 6,633,565,734.10/87,063.90
  6. Step 6: Final answer
    x = 76,191.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.