Home / 129,076.56-193,658.04-65,869.20

Finding the Fourth Proportional to 129,076.56, 193,658.04 and 65,869.20

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Solution

The fourth proportional to 129,076.56, 193,658.04 and 65,869.20 is: 98,825.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,076.56 : 193,658.04 = 65,869.20 : x
  2. Step 2: Convert to fraction form
    129,076.56/193,658.04 = 65,869.20/x
  3. Step 3: Cross multiply
    129,076.56x = 193,658.04 × 65,869.20
  4. Step 4: Simplify right side
    129,076.56x = 12,756,100,168.37
  5. Step 5: Solve for x
    x = 12,756,100,168.37/129,076.56
  6. Step 6: Final answer
    x = 98,825.85

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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.