Home / 129,500.56-178,648.66-84,192.76

Finding the Fourth Proportional to 129,500.56, 178,648.66 and 84,192.76

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Solution

The fourth proportional to 129,500.56, 178,648.66 and 84,192.76 is: 116,145.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,500.56 : 178,648.66 = 84,192.76 : x
  2. Step 2: Convert to fraction form
    129,500.56/178,648.66 = 84,192.76/x
  3. Step 3: Cross multiply
    129,500.56x = 178,648.66 × 84,192.76
  4. Step 4: Simplify right side
    129,500.56x = 15,040,923,755.70
  5. Step 5: Solve for x
    x = 15,040,923,755.70/129,500.56
  6. Step 6: Final answer
    x = 116,145.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.