Home / 121,340.20-182,010.30-85,910.80

Finding the Fourth Proportional to 121,340.20, 182,010.30 and 85,910.80

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Solution

The fourth proportional to 121,340.20, 182,010.30 and 85,910.80 is: 128,866.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,340.20 : 182,010.30 = 85,910.80 : x
  2. Step 2: Convert to fraction form
    121,340.20/182,010.30 = 85,910.80/x
  3. Step 3: Cross multiply
    121,340.20x = 182,010.30 × 85,910.80
  4. Step 4: Simplify right side
    121,340.20x = 15,636,650,481.24
  5. Step 5: Solve for x
    x = 15,636,650,481.24/121,340.20
  6. Step 6: Final answer
    x = 128,866.20

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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.