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Finding the Fourth Proportional to 121,750.10, 182,625.15 and 71,854.10

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Solution

The fourth proportional to 121,750.10, 182,625.15 and 71,854.10 is: 107,781.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,750.10 : 182,625.15 = 71,854.10 : x
  2. Step 2: Convert to fraction form
    121,750.10/182,625.15 = 71,854.10/x
  3. Step 3: Cross multiply
    121,750.10x = 182,625.15 × 71,854.10
  4. Step 4: Simplify right side
    121,750.10x = 13,122,365,790.62
  5. Step 5: Solve for x
    x = 13,122,365,790.62/121,750.10
  6. Step 6: Final answer
    x = 107,781.15

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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.