Home / 121,102.32-167,052.12-72,691.36

Finding the Fourth Proportional to 121,102.32, 167,052.12 and 72,691.36

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Solution

The fourth proportional to 121,102.32, 167,052.12 and 72,691.36 is: 100,272.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,102.32 : 167,052.12 = 72,691.36 : x
  2. Step 2: Convert to fraction form
    121,102.32/167,052.12 = 72,691.36/x
  3. Step 3: Cross multiply
    121,102.32x = 167,052.12 × 72,691.36
  4. Step 4: Simplify right side
    121,102.32x = 12,143,245,793.68
  5. Step 5: Solve for x
    x = 12,143,245,793.68/121,102.32
  6. Step 6: Final answer
    x = 100,272.61

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1.5x scale

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.