Home / 121,129.30-167,158.42-67,427

Finding the Fourth Proportional to 121,129.30, 167,158.42 and 67,427

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Solution

The fourth proportional to 121,129.30, 167,158.42 and 67,427 is: 93,049.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,129.30 : 167,158.42 = 67,427 : x
  2. Step 2: Convert to fraction form
    121,129.30/167,158.42 = 67,427/x
  3. Step 3: Cross multiply
    121,129.30x = 167,158.42 × 67,427
  4. Step 4: Simplify right side
    121,129.30x = 11,270,990,785.34
  5. Step 5: Solve for x
    x = 11,270,990,785.34/121,129.30
  6. Step 6: Final answer
    x = 93,049.25

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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.