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Finding the Fourth Proportional to 144,654.22, 199,639.88 and 80,979.71

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Solution

The fourth proportional to 144,654.22, 199,639.88 and 80,979.71 is: 111,761.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,654.22 : 199,639.88 = 80,979.71 : x
  2. Step 2: Convert to fraction form
    144,654.22/199,639.88 = 80,979.71/x
  3. Step 3: Cross multiply
    144,654.22x = 199,639.88 × 80,979.71
  4. Step 4: Simplify right side
    144,654.22x = 16,166,779,586.83
  5. Step 5: Solve for x
    x = 16,166,779,586.83/144,654.22
  6. Step 6: Final answer
    x = 111,761.55

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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.