Home / 87,176.18-120,272.19-56,978.94

Finding the Fourth Proportional to 87,176.18, 120,272.19 and 56,978.94

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Solution

The fourth proportional to 87,176.18, 120,272.19 and 56,978.94 is: 78,610.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,176.18 : 120,272.19 = 56,978.94 : x
  2. Step 2: Convert to fraction form
    87,176.18/120,272.19 = 56,978.94/x
  3. Step 3: Cross multiply
    87,176.18x = 120,272.19 × 56,978.94
  4. Step 4: Simplify right side
    87,176.18x = 6,852,981,440.74
  5. Step 5: Solve for x
    x = 6,852,981,440.74/87,176.18
  6. Step 6: Final answer
    x = 78,610.71

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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.