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Finding the Fourth Proportional to 108,388.92, 149,582.52 and 60,639.42

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Solution

The fourth proportional to 108,388.92, 149,582.52 and 60,639.42 is: 83,685.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,388.92 : 149,582.52 = 60,639.42 : x
  2. Step 2: Convert to fraction form
    108,388.92/149,582.52 = 60,639.42/x
  3. Step 3: Cross multiply
    108,388.92x = 149,582.52 × 60,639.42
  4. Step 4: Simplify right side
    108,388.92x = 9,070,597,254.94
  5. Step 5: Solve for x
    x = 9,070,597,254.94/108,388.92
  6. Step 6: Final answer
    x = 83,685.65

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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.