Home / 87,113.12-120,158.76-69,179.68

Finding the Fourth Proportional to 87,113.12, 120,158.76 and 69,179.68

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Solution

The fourth proportional to 87,113.12, 120,158.76 and 69,179.68 is: 95,422.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,113.12 : 120,158.76 = 69,179.68 : x
  2. Step 2: Convert to fraction form
    87,113.12/120,158.76 = 69,179.68/x
  3. Step 3: Cross multiply
    87,113.12x = 120,158.76 × 69,179.68
  4. Step 4: Simplify right side
    87,113.12x = 8,312,544,566.00
  5. Step 5: Solve for x
    x = 8,312,544,566.00/87,113.12
  6. Step 6: Final answer
    x = 95,422.42

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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.