Home / 138,939.30-191,736.42-75,277.05

Finding the Fourth Proportional to 138,939.30, 191,736.42 and 75,277.05

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Solution

The fourth proportional to 138,939.30, 191,736.42 and 75,277.05 is: 103,882.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,939.30 : 191,736.42 = 75,277.05 : x
  2. Step 2: Convert to fraction form
    138,939.30/191,736.42 = 75,277.05/x
  3. Step 3: Cross multiply
    138,939.30x = 191,736.42 × 75,277.05
  4. Step 4: Simplify right side
    138,939.30x = 14,433,351,073.86
  5. Step 5: Solve for x
    x = 14,433,351,073.86/138,939.30
  6. Step 6: Final answer
    x = 103,882.42

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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.