Home / 138,616.20-191,290.22-74,953.85

Finding the Fourth Proportional to 138,616.20, 191,290.22 and 74,953.85

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Solution

The fourth proportional to 138,616.20, 191,290.22 and 74,953.85 is: 103,436.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,616.20 : 191,290.22 = 74,953.85 : x
  2. Step 2: Convert to fraction form
    138,616.20/191,290.22 = 74,953.85/x
  3. Step 3: Cross multiply
    138,616.20x = 191,290.22 × 74,953.85
  4. Step 4: Simplify right side
    138,616.20x = 14,337,937,499.90
  5. Step 5: Solve for x
    x = 14,337,937,499.90/138,616.20
  6. Step 6: Final answer
    x = 103,436.23

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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.