Home / 138,632.38-191,364.42-107,944.72

Finding the Fourth Proportional to 138,632.38, 191,364.42 and 107,944.72

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Solution

The fourth proportional to 138,632.38, 191,364.42 and 107,944.72 is: 149,004.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,632.38 : 191,364.42 = 107,944.72 : x
  2. Step 2: Convert to fraction form
    138,632.38/191,364.42 = 107,944.72/x
  3. Step 3: Cross multiply
    138,632.38x = 191,364.42 × 107,944.72
  4. Step 4: Simplify right side
    138,632.38x = 20,656,778,661.24
  5. Step 5: Solve for x
    x = 20,656,778,661.24/138,632.38
  6. Step 6: Final answer
    x = 149,004.00

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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.