Home / 129,531.47-194,323.39-54,651.80

Finding the Fourth Proportional to 129,531.47, 194,323.39 and 54,651.80

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Solution

The fourth proportional to 129,531.47, 194,323.39 and 54,651.80 is: 81,988.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,531.47 : 194,323.39 = 54,651.80 : x
  2. Step 2: Convert to fraction form
    129,531.47/194,323.39 = 54,651.80/x
  3. Step 3: Cross multiply
    129,531.47x = 194,323.39 × 54,651.80
  4. Step 4: Simplify right side
    129,531.47x = 10,620,123,045.60
  5. Step 5: Solve for x
    x = 10,620,123,045.60/129,531.47
  6. Step 6: Final answer
    x = 81,988.75

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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.