Home / 140,142.38-193,397.07-76,481.54

Finding the Fourth Proportional to 140,142.38, 193,397.07 and 76,481.54

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Solution

The fourth proportional to 140,142.38, 193,397.07 and 76,481.54 is: 105,544.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,142.38 : 193,397.07 = 76,481.54 : x
  2. Step 2: Convert to fraction form
    140,142.38/193,397.07 = 76,481.54/x
  3. Step 3: Cross multiply
    140,142.38x = 193,397.07 × 76,481.54
  4. Step 4: Simplify right side
    140,142.38x = 14,791,304,778.10
  5. Step 5: Solve for x
    x = 14,791,304,778.10/140,142.38
  6. Step 6: Final answer
    x = 105,544.84

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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.