Home / 99,391.28-149,086.94-68,131.76

Finding the Fourth Proportional to 99,391.28, 149,086.94 and 68,131.76

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Solution

The fourth proportional to 99,391.28, 149,086.94 and 68,131.76 is: 102,197.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,391.28 : 149,086.94 = 68,131.76 : x
  2. Step 2: Convert to fraction form
    99,391.28/149,086.94 = 68,131.76/x
  3. Step 3: Cross multiply
    99,391.28x = 149,086.94 × 68,131.76
  4. Step 4: Simplify right side
    99,391.28x = 10,157,555,615.21
  5. Step 5: Solve for x
    x = 10,157,555,615.21/99,391.28
  6. Step 6: Final answer
    x = 102,197.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.