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Finding the Fourth Proportional to 140,073.49, 193,310.56 and 79,649.76

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Solution

The fourth proportional to 140,073.49, 193,310.56 and 79,649.76 is: 109,921.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,073.49 : 193,310.56 = 79,649.76 : x
  2. Step 2: Convert to fraction form
    140,073.49/193,310.56 = 79,649.76/x
  3. Step 3: Cross multiply
    140,073.49x = 193,310.56 × 79,649.76
  4. Step 4: Simplify right side
    140,073.49x = 15,397,139,361.00
  5. Step 5: Solve for x
    x = 15,397,139,361.00/140,073.49
  6. Step 6: Final answer
    x = 109,921.86

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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.