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Finding the Fourth Proportional to 100,504.34, 138,696.15 and 58,062.88

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Solution

The fourth proportional to 100,504.34, 138,696.15 and 58,062.88 is: 80,126.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,504.34 : 138,696.15 = 58,062.88 : x
  2. Step 2: Convert to fraction form
    100,504.34/138,696.15 = 58,062.88/x
  3. Step 3: Cross multiply
    100,504.34x = 138,696.15 × 58,062.88
  4. Step 4: Simplify right side
    100,504.34x = 8,053,097,198.25
  5. Step 5: Solve for x
    x = 8,053,097,198.25/100,504.34
  6. Step 6: Final answer
    x = 80,126.86

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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.