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Finding the Fourth Proportional to 103,751.76, 155,627.10 and 66,218.52

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Solution

The fourth proportional to 103,751.76, 155,627.10 and 66,218.52 is: 99,327.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,751.76 : 155,627.10 = 66,218.52 : x
  2. Step 2: Convert to fraction form
    103,751.76/155,627.10 = 66,218.52/x
  3. Step 3: Cross multiply
    103,751.76x = 155,627.10 × 66,218.52
  4. Step 4: Simplify right side
    103,751.76x = 10,305,396,233.89
  5. Step 5: Solve for x
    x = 10,305,396,233.89/103,751.76
  6. Step 6: Final answer
    x = 99,327.44

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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.