Home / 129,664.20-194,237.10-74,195.40

Finding the Fourth Proportional to 129,664.20, 194,237.10 and 74,195.40

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Solution

The fourth proportional to 129,664.20, 194,237.10 and 74,195.40 is: 111,144.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,664.20 : 194,237.10 = 74,195.40 : x
  2. Step 2: Convert to fraction form
    129,664.20/194,237.10 = 74,195.40/x
  3. Step 3: Cross multiply
    129,664.20x = 194,237.10 × 74,195.40
  4. Step 4: Simplify right side
    129,664.20x = 14,411,499,329.34
  5. Step 5: Solve for x
    x = 14,411,499,329.34/129,664.20
  6. Step 6: Final answer
    x = 111,144.78

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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.