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Finding the Fourth Proportional to 100,504.60, 138,761.26 and 62,304.98

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Solution

The fourth proportional to 100,504.60, 138,761.26 and 62,304.98 is: 86,021.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,504.60 : 138,761.26 = 62,304.98 : x
  2. Step 2: Convert to fraction form
    100,504.60/138,761.26 = 62,304.98/x
  3. Step 3: Cross multiply
    100,504.60x = 138,761.26 × 62,304.98
  4. Step 4: Simplify right side
    100,504.60x = 8,645,516,679.51
  5. Step 5: Solve for x
    x = 8,645,516,679.51/100,504.60
  6. Step 6: Final answer
    x = 86,021.10

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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.