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Finding the Fourth Proportional to 108,079.68, 149,145.92 and 67,815.04

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Solution

The fourth proportional to 108,079.68, 149,145.92 and 67,815.04 is: 93,582.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,079.68 : 149,145.92 = 67,815.04 : x
  2. Step 2: Convert to fraction form
    108,079.68/149,145.92 = 67,815.04/x
  3. Step 3: Cross multiply
    108,079.68x = 149,145.92 × 67,815.04
  4. Step 4: Simplify right side
    108,079.68x = 10,114,336,530.64
  5. Step 5: Solve for x
    x = 10,114,336,530.64/108,079.68
  6. Step 6: Final answer
    x = 93,582.22

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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.