Home / 153,121.91-229,729.48-78,294.61

Finding the Fourth Proportional to 153,121.91, 229,729.48 and 78,294.61

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Solution

The fourth proportional to 153,121.91, 229,729.48 and 78,294.61 is: 117,465.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,121.91 : 229,729.48 = 78,294.61 : x
  2. Step 2: Convert to fraction form
    153,121.91/229,729.48 = 78,294.61/x
  3. Step 3: Cross multiply
    153,121.91x = 229,729.48 × 78,294.61
  4. Step 4: Simplify right side
    153,121.91x = 17,986,580,042.10
  5. Step 5: Solve for x
    x = 17,986,580,042.10/153,121.91
  6. Step 6: Final answer
    x = 117,465.75

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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.