Home / 129,287.12-194,112.33-66,152.52

Finding the Fourth Proportional to 129,287.12, 194,112.33 and 66,152.52

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Solution

The fourth proportional to 129,287.12, 194,112.33 and 66,152.52 is: 99,321.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,287.12 : 194,112.33 = 66,152.52 : x
  2. Step 2: Convert to fraction form
    129,287.12/194,112.33 = 66,152.52/x
  3. Step 3: Cross multiply
    129,287.12x = 194,112.33 × 66,152.52
  4. Step 4: Simplify right side
    129,287.12x = 12,841,019,792.57
  5. Step 5: Solve for x
    x = 12,841,019,792.57/129,287.12
  6. Step 6: Final answer
    x = 99,321.72

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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.