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Finding the Fourth Proportional to 108,761.54, 150,155.27 and 68,509.80

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Solution

The fourth proportional to 108,761.54, 150,155.27 and 68,509.80 is: 94,584.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,761.54 : 150,155.27 = 68,509.80 : x
  2. Step 2: Convert to fraction form
    108,761.54/150,155.27 = 68,509.80/x
  3. Step 3: Cross multiply
    108,761.54x = 150,155.27 × 68,509.80
  4. Step 4: Simplify right side
    108,761.54x = 10,287,107,516.65
  5. Step 5: Solve for x
    x = 10,287,107,516.65/108,761.54
  6. Step 6: Final answer
    x = 94,584.06

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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.