Home / 129,147.80-193,690.86-54,269.36

Finding the Fourth Proportional to 129,147.80, 193,690.86 and 54,269.36

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Solution

The fourth proportional to 129,147.80, 193,690.86 and 54,269.36 is: 81,391.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,147.80 : 193,690.86 = 54,269.36 : x
  2. Step 2: Convert to fraction form
    129,147.80/193,690.86 = 54,269.36/x
  3. Step 3: Cross multiply
    129,147.80x = 193,690.86 × 54,269.36
  4. Step 4: Simplify right side
    129,147.80x = 10,511,479,010.05
  5. Step 5: Solve for x
    x = 10,511,479,010.05/129,147.80
  6. Step 6: Final answer
    x = 81,391.08

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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.