Home / 129,440.28-194,340.24-85,350.36

Finding the Fourth Proportional to 129,440.28, 194,340.24 and 85,350.36

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Solution

The fourth proportional to 129,440.28, 194,340.24 and 85,350.36 is: 128,144.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,440.28 : 194,340.24 = 85,350.36 : x
  2. Step 2: Convert to fraction form
    129,440.28/194,340.24 = 85,350.36/x
  3. Step 3: Cross multiply
    129,440.28x = 194,340.24 × 85,350.36
  4. Step 4: Simplify right side
    129,440.28x = 16,587,009,446.49
  5. Step 5: Solve for x
    x = 16,587,009,446.49/129,440.28
  6. Step 6: Final answer
    x = 128,144.11

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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.