Home / 129,769.30-194,265.15-77,151.70

Finding the Fourth Proportional to 129,769.30, 194,265.15 and 77,151.70

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Solution

The fourth proportional to 129,769.30, 194,265.15 and 77,151.70 is: 115,496.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,769.30 : 194,265.15 = 77,151.70 : x
  2. Step 2: Convert to fraction form
    129,769.30/194,265.15 = 77,151.70/x
  3. Step 3: Cross multiply
    129,769.30x = 194,265.15 × 77,151.70
  4. Step 4: Simplify right side
    129,769.30x = 14,987,886,573.26
  5. Step 5: Solve for x
    x = 14,987,886,573.26/129,769.30
  6. Step 6: Final answer
    x = 115,496.40

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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.