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Finding the Fourth Proportional to 121,884.52, 182,567.58 and 71,910.76

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Solution

The fourth proportional to 121,884.52, 182,567.58 and 71,910.76 is: 107,713.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,884.52 : 182,567.58 = 71,910.76 : x
  2. Step 2: Convert to fraction form
    121,884.52/182,567.58 = 71,910.76/x
  3. Step 3: Cross multiply
    121,884.52x = 182,567.58 × 71,910.76
  4. Step 4: Simplify right side
    121,884.52x = 13,128,573,429.16
  5. Step 5: Solve for x
    x = 13,128,573,429.16/121,884.52
  6. Step 6: Final answer
    x = 107,713.21

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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.