Home / 138,833.20-191,589.57-75,170.98

Finding the Fourth Proportional to 138,833.20, 191,589.57 and 75,170.98

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Solution

The fourth proportional to 138,833.20, 191,589.57 and 75,170.98 is: 103,735.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,833.20 : 191,589.57 = 75,170.98 : x
  2. Step 2: Convert to fraction form
    138,833.20/191,589.57 = 75,170.98/x
  3. Step 3: Cross multiply
    138,833.20x = 191,589.57 × 75,170.98
  4. Step 4: Simplify right side
    138,833.20x = 14,401,975,734.68
  5. Step 5: Solve for x
    x = 14,401,975,734.68/138,833.20
  6. Step 6: Final answer
    x = 103,735.82

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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.