Home / 121,340.40-182,010.60-100,345.20

Finding the Fourth Proportional to 121,340.40, 182,010.60 and 100,345.20

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Solution

The fourth proportional to 121,340.40, 182,010.60 and 100,345.20 is: 150,517.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,340.40 : 182,010.60 = 100,345.20 : x
  2. Step 2: Convert to fraction form
    121,340.40/182,010.60 = 100,345.20/x
  3. Step 3: Cross multiply
    121,340.40x = 182,010.60 × 100,345.20
  4. Step 4: Simplify right side
    121,340.40x = 18,263,890,059.12
  5. Step 5: Solve for x
    x = 18,263,890,059.12/121,340.40
  6. Step 6: Final answer
    x = 150,517.80

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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.