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Finding the Fourth Proportional to 148,842.78, 205,404.93 and 80,860.02

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Solution

The fourth proportional to 148,842.78, 205,404.93 and 80,860.02 is: 111,587.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,842.78 : 205,404.93 = 80,860.02 : x
  2. Step 2: Convert to fraction form
    148,842.78/205,404.93 = 80,860.02/x
  3. Step 3: Cross multiply
    148,842.78x = 205,404.93 × 80,860.02
  4. Step 4: Simplify right side
    148,842.78x = 16,609,046,747.90
  5. Step 5: Solve for x
    x = 16,609,046,747.90/148,842.78
  6. Step 6: Final answer
    x = 111,587.86

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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.