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Finding the Fourth Proportional to 188,760.61, 260,489.68 and 103,877.68

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Solution

The fourth proportional to 188,760.61, 260,489.68 and 103,877.68 is: 143,351.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,760.61 : 260,489.68 = 103,877.68 : x
  2. Step 2: Convert to fraction form
    188,760.61/260,489.68 = 103,877.68/x
  3. Step 3: Cross multiply
    188,760.61x = 260,489.68 × 103,877.68
  4. Step 4: Simplify right side
    188,760.61x = 27,059,062,319.89
  5. Step 5: Solve for x
    x = 27,059,062,319.89/188,760.61
  6. Step 6: Final answer
    x = 143,351.21

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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.