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Finding the Fourth Proportional to 104,394.64, 144,010.92 and 66,089.20

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Solution

The fourth proportional to 104,394.64, 144,010.92 and 66,089.20 is: 91,169.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,394.64 : 144,010.92 = 66,089.20 : x
  2. Step 2: Convert to fraction form
    104,394.64/144,010.92 = 66,089.20/x
  3. Step 3: Cross multiply
    104,394.64x = 144,010.92 × 66,089.20
  4. Step 4: Simplify right side
    104,394.64x = 9,517,566,494.06
  5. Step 5: Solve for x
    x = 9,517,566,494.06/104,394.64
  6. Step 6: Final answer
    x = 91,169.11

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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.