Home / 129,977.70-194,966.55-115,215.45

Finding the Fourth Proportional to 129,977.70, 194,966.55 and 115,215.45

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Solution

The fourth proportional to 129,977.70, 194,966.55 and 115,215.45 is: 172,823.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,977.70 : 194,966.55 = 115,215.45 : x
  2. Step 2: Convert to fraction form
    129,977.70/194,966.55 = 115,215.45/x
  3. Step 3: Cross multiply
    129,977.70x = 194,966.55 × 115,215.45
  4. Step 4: Simplify right side
    129,977.70x = 22,463,158,793.20
  5. Step 5: Solve for x
    x = 22,463,158,793.20/129,977.70
  6. Step 6: Final answer
    x = 172,823.18

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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.