Home / 87,180.48-120,079.89-66,998.75

Finding the Fourth Proportional to 87,180.48, 120,079.89 and 66,998.75

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Solution

The fourth proportional to 87,180.48, 120,079.89 and 66,998.75 is: 92,282.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,180.48 : 120,079.89 = 66,998.75 : x
  2. Step 2: Convert to fraction form
    87,180.48/120,079.89 = 66,998.75/x
  3. Step 3: Cross multiply
    87,180.48x = 120,079.89 × 66,998.75
  4. Step 4: Simplify right side
    87,180.48x = 8,045,201,929.74
  5. Step 5: Solve for x
    x = 8,045,201,929.74/87,180.48
  6. Step 6: Final answer
    x = 92,282.15

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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.