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Finding the Fourth Proportional to 108,819.49, 150,171.19 and 60,421.51

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Solution

The fourth proportional to 108,819.49, 150,171.19 and 60,421.51 is: 83,381.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,819.49 : 150,171.19 = 60,421.51 : x
  2. Step 2: Convert to fraction form
    108,819.49/150,171.19 = 60,421.51/x
  3. Step 3: Cross multiply
    108,819.49x = 150,171.19 × 60,421.51
  4. Step 4: Simplify right side
    108,819.49x = 9,073,569,380.76
  5. Step 5: Solve for x
    x = 9,073,569,380.76/108,819.49
  6. Step 6: Final answer
    x = 83,381.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.