Home / 87,113.62-120,159.45-69,180.18

Finding the Fourth Proportional to 87,113.62, 120,159.45 and 69,180.18

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Solution

The fourth proportional to 87,113.62, 120,159.45 and 69,180.18 is: 95,423.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,113.62 : 120,159.45 = 69,180.18 : x
  2. Step 2: Convert to fraction form
    87,113.62/120,159.45 = 69,180.18/x
  3. Step 3: Cross multiply
    87,113.62x = 120,159.45 × 69,180.18
  4. Step 4: Simplify right side
    87,113.62x = 8,312,652,379.70
  5. Step 5: Solve for x
    x = 8,312,652,379.70/87,113.62
  6. Step 6: Final answer
    x = 95,423.11

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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.