Home / 138,849.92-191,613.80-75,187.72

Finding the Fourth Proportional to 138,849.92, 191,613.80 and 75,187.72

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Solution

The fourth proportional to 138,849.92, 191,613.80 and 75,187.72 is: 103,759.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,849.92 : 191,613.80 = 75,187.72 : x
  2. Step 2: Convert to fraction form
    138,849.92/191,613.80 = 75,187.72/x
  3. Step 3: Cross multiply
    138,849.92x = 191,613.80 × 75,187.72
  4. Step 4: Simplify right side
    138,849.92x = 14,407,004,742.54
  5. Step 5: Solve for x
    x = 14,407,004,742.54/138,849.92
  6. Step 6: Final answer
    x = 103,759.55

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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.