Home / 138,613.38-191,286.60-74,951.16

Finding the Fourth Proportional to 138,613.38, 191,286.60 and 74,951.16

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Solution

The fourth proportional to 138,613.38, 191,286.60 and 74,951.16 is: 103,432.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,613.38 : 191,286.60 = 74,951.16 : x
  2. Step 2: Convert to fraction form
    138,613.38/191,286.60 = 74,951.16/x
  3. Step 3: Cross multiply
    138,613.38x = 191,286.60 × 74,951.16
  4. Step 4: Simplify right side
    138,613.38x = 14,337,152,562.46
  5. Step 5: Solve for x
    x = 14,337,152,562.46/138,613.38
  6. Step 6: Final answer
    x = 103,432.67

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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.