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Finding the Fourth Proportional to 137,777.61, 206,679.48 and 53,544.28

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Solution

The fourth proportional to 137,777.61, 206,679.48 and 53,544.28 is: 80,321.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,777.61 : 206,679.48 = 53,544.28 : x
  2. Step 2: Convert to fraction form
    137,777.61/206,679.48 = 53,544.28/x
  3. Step 3: Cross multiply
    137,777.61x = 206,679.48 × 53,544.28
  4. Step 4: Simplify right side
    137,777.61x = 11,066,503,627.95
  5. Step 5: Solve for x
    x = 11,066,503,627.95/137,777.61
  6. Step 6: Final answer
    x = 80,321.50

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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.