Home / 121,431.12-182,168.62-54,902.58

Finding the Fourth Proportional to 121,431.12, 182,168.62 and 54,902.58

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Solution

The fourth proportional to 121,431.12, 182,168.62 and 54,902.58 is: 82,363.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,431.12 : 182,168.62 = 54,902.58 : x
  2. Step 2: Convert to fraction form
    121,431.12/182,168.62 = 54,902.58/x
  3. Step 3: Cross multiply
    121,431.12x = 182,168.62 × 54,902.58
  4. Step 4: Simplify right side
    121,431.12x = 10,001,527,233.04
  5. Step 5: Solve for x
    x = 10,001,527,233.04/121,431.12
  6. Step 6: Final answer
    x = 82,363.79

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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.