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Finding the Fourth Proportional to 110,248.80, 165,241.92 and 76,787.76

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Solution

The fourth proportional to 110,248.80, 165,241.92 and 76,787.76 is: 115,090.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,248.80 : 165,241.92 = 76,787.76 : x
  2. Step 2: Convert to fraction form
    110,248.80/165,241.92 = 76,787.76/x
  3. Step 3: Cross multiply
    110,248.80x = 165,241.92 × 76,787.76
  4. Step 4: Simplify right side
    110,248.80x = 12,688,556,894.90
  5. Step 5: Solve for x
    x = 12,688,556,894.90/110,248.80
  6. Step 6: Final answer
    x = 115,090.20

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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.