Home / 129,134.19-193,759.67-65,921.69

Finding the Fourth Proportional to 129,134.19, 193,759.67 and 65,921.69

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Solution

The fourth proportional to 129,134.19, 193,759.67 and 65,921.69 is: 98,912.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,134.19 : 193,759.67 = 65,921.69 : x
  2. Step 2: Convert to fraction form
    129,134.19/193,759.67 = 65,921.69/x
  3. Step 3: Cross multiply
    129,134.19x = 193,759.67 × 65,921.69
  4. Step 4: Simplify right side
    129,134.19x = 12,772,965,549.45
  5. Step 5: Solve for x
    x = 12,772,965,549.45/129,134.19
  6. Step 6: Final answer
    x = 98,912.34

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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.