Home / 129,815.40-194,755.50-36,320.34

Finding the Fourth Proportional to 129,815.40, 194,755.50 and 36,320.34

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Solution

The fourth proportional to 129,815.40, 194,755.50 and 36,320.34 is: 54,489.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,815.40 : 194,755.50 = 36,320.34 : x
  2. Step 2: Convert to fraction form
    129,815.40/194,755.50 = 36,320.34/x
  3. Step 3: Cross multiply
    129,815.40x = 194,755.50 × 36,320.34
  4. Step 4: Simplify right side
    129,815.40x = 7,073,585,976.87
  5. Step 5: Solve for x
    x = 7,073,585,976.87/129,815.40
  6. Step 6: Final answer
    x = 54,489.58

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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.