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Finding the Fourth Proportional to 168,471, 232,519.68 and 100,492.20

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Solution

The fourth proportional to 168,471, 232,519.68 and 100,492.20 is: 138,696.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,471 : 232,519.68 = 100,492.20 : x
  2. Step 2: Convert to fraction form
    168,471/232,519.68 = 100,492.20/x
  3. Step 3: Cross multiply
    168,471x = 232,519.68 × 100,492.20
  4. Step 4: Simplify right side
    168,471x = 23,366,414,186.50
  5. Step 5: Solve for x
    x = 23,366,414,186.50/168,471
  6. Step 6: Final answer
    x = 138,696.95

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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.