Home / 121,170.11-167,218.60-75,833.60

Finding the Fourth Proportional to 121,170.11, 167,218.60 and 75,833.60

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Solution

The fourth proportional to 121,170.11, 167,218.60 and 75,833.60 is: 104,652.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,170.11 : 167,218.60 = 75,833.60 : x
  2. Step 2: Convert to fraction form
    121,170.11/167,218.60 = 75,833.60/x
  3. Step 3: Cross multiply
    121,170.11x = 167,218.60 × 75,833.60
  4. Step 4: Simplify right side
    121,170.11x = 12,680,788,424.96
  5. Step 5: Solve for x
    x = 12,680,788,424.96/121,170.11
  6. Step 6: Final answer
    x = 104,652.78

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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.