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Finding the Fourth Proportional to 113,338.80, 169,619.40 and 104,007.60

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Solution

The fourth proportional to 113,338.80, 169,619.40 and 104,007.60 is: 155,654.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,338.80 : 169,619.40 = 104,007.60 : x
  2. Step 2: Convert to fraction form
    113,338.80/169,619.40 = 104,007.60/x
  3. Step 3: Cross multiply
    113,338.80x = 169,619.40 × 104,007.60
  4. Step 4: Simplify right side
    113,338.80x = 17,641,706,707.44
  5. Step 5: Solve for x
    x = 17,641,706,707.44/113,338.80
  6. Step 6: Final answer
    x = 155,654.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.