Home / 121,572.90-182,280.15-109,131.30

Finding the Fourth Proportional to 121,572.90, 182,280.15 and 109,131.30

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Solution

The fourth proportional to 121,572.90, 182,280.15 and 109,131.30 is: 163,625.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,572.90 : 182,280.15 = 109,131.30 : x
  2. Step 2: Convert to fraction form
    121,572.90/182,280.15 = 109,131.30/x
  3. Step 3: Cross multiply
    121,572.90x = 182,280.15 × 109,131.30
  4. Step 4: Simplify right side
    121,572.90x = 19,892,469,733.70
  5. Step 5: Solve for x
    x = 19,892,469,733.70/121,572.90
  6. Step 6: Final answer
    x = 163,625.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.