Home / 87,069.90-120,135.48-55,227.18

Finding the Fourth Proportional to 87,069.90, 120,135.48 and 55,227.18

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Solution

The fourth proportional to 87,069.90, 120,135.48 and 55,227.18 is: 76,200.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,069.90 : 120,135.48 = 55,227.18 : x
  2. Step 2: Convert to fraction form
    87,069.90/120,135.48 = 55,227.18/x
  3. Step 3: Cross multiply
    87,069.90x = 120,135.48 × 55,227.18
  4. Step 4: Simplify right side
    87,069.90x = 6,634,743,778.35
  5. Step 5: Solve for x
    x = 6,634,743,778.35/87,069.90
  6. Step 6: Final answer
    x = 76,200.20

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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.