Home / 154,747,739.52-231,930,290.52-78,092,689.68

Finding the Fourth Proportional to 154,747,739.52, 231,930,290.52 and 78,092,689.68

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Solution

The fourth proportional to 154,747,739.52, 231,930,290.52 and 78,092,689.68 is: 117,042,486.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,747,739.52 : 231,930,290.52 = 78,092,689.68 : x
  2. Step 2: Convert to fraction form
    154,747,739.52/231,930,290.52 = 78,092,689.68/x
  3. Step 3: Cross multiply
    154,747,739.52x = 231,930,290.52 × 78,092,689.68
  4. Step 4: Simplify right side
    154,747,739.52x = 18,112,060,204,970,608
  5. Step 5: Solve for x
    x = 18,112,060,204,970,608/154,747,739.52
  6. Step 6: Final answer
    x = 117,042,486.44

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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.