Home / 129,052.44-178,061.22-75,306.78

Finding the Fourth Proportional to 129,052.44, 178,061.22 and 75,306.78

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Solution

The fourth proportional to 129,052.44, 178,061.22 and 75,306.78 is: 103,905.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,052.44 : 178,061.22 = 75,306.78 : x
  2. Step 2: Convert to fraction form
    129,052.44/178,061.22 = 75,306.78/x
  3. Step 3: Cross multiply
    129,052.44x = 178,061.22 × 75,306.78
  4. Step 4: Simplify right side
    129,052.44x = 13,409,217,121.07
  5. Step 5: Solve for x
    x = 13,409,217,121.07/129,052.44
  6. Step 6: Final answer
    x = 103,905.18

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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.