Home / 121,229.40-181,844.10-76,906.20

Finding the Fourth Proportional to 121,229.40, 181,844.10 and 76,906.20

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Solution

The fourth proportional to 121,229.40, 181,844.10 and 76,906.20 is: 115,359.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,229.40 : 181,844.10 = 76,906.20 : x
  2. Step 2: Convert to fraction form
    121,229.40/181,844.10 = 76,906.20/x
  3. Step 3: Cross multiply
    121,229.40x = 181,844.10 × 76,906.20
  4. Step 4: Simplify right side
    121,229.40x = 13,984,938,723.42
  5. Step 5: Solve for x
    x = 13,984,938,723.42/121,229.40
  6. Step 6: Final answer
    x = 115,359.30

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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.