Home / 129,687.75-194,362.13-66,454.29

Finding the Fourth Proportional to 129,687.75, 194,362.13 and 66,454.29

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Solution

The fourth proportional to 129,687.75, 194,362.13 and 66,454.29 is: 99,594.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,687.75 : 194,362.13 = 66,454.29 : x
  2. Step 2: Convert to fraction form
    129,687.75/194,362.13 = 66,454.29/x
  3. Step 3: Cross multiply
    129,687.75x = 194,362.13 × 66,454.29
  4. Step 4: Simplify right side
    129,687.75x = 12,916,197,518.17
  5. Step 5: Solve for x
    x = 12,916,197,518.17/129,687.75
  6. Step 6: Final answer
    x = 99,594.58

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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.