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Finding the Fourth Proportional to 108,690.48, 149,929.17 and 68,340.30

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Solution

The fourth proportional to 108,690.48, 149,929.17 and 68,340.30 is: 94,269.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,690.48 : 149,929.17 = 68,340.30 : x
  2. Step 2: Convert to fraction form
    108,690.48/149,929.17 = 68,340.30/x
  3. Step 3: Cross multiply
    108,690.48x = 149,929.17 × 68,340.30
  4. Step 4: Simplify right side
    108,690.48x = 10,246,204,456.55
  5. Step 5: Solve for x
    x = 10,246,204,456.55/108,690.48
  6. Step 6: Final answer
    x = 94,269.57

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1.5x scale

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.