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Finding the Fourth Proportional to 108,976.60, 150,387.84 and 61,229.92

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Solution

The fourth proportional to 108,976.60, 150,387.84 and 61,229.92 is: 84,497.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,976.60 : 150,387.84 = 61,229.92 : x
  2. Step 2: Convert to fraction form
    108,976.60/150,387.84 = 61,229.92/x
  3. Step 3: Cross multiply
    108,976.60x = 150,387.84 × 61,229.92
  4. Step 4: Simplify right side
    108,976.60x = 9,208,235,412.17
  5. Step 5: Solve for x
    x = 9,208,235,412.17/108,976.60
  6. Step 6: Final answer
    x = 84,497.36

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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.