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Finding the Fourth Proportional to 103,842.57, 155,761.62 and 28,960.73

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Solution

The fourth proportional to 103,842.57, 155,761.62 and 28,960.73 is: 43,440.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,842.57 : 155,761.62 = 28,960.73 : x
  2. Step 2: Convert to fraction form
    103,842.57/155,761.62 = 28,960.73/x
  3. Step 3: Cross multiply
    103,842.57x = 155,761.62 × 28,960.73
  4. Step 4: Simplify right side
    103,842.57x = 4,510,970,221.18
  5. Step 5: Solve for x
    x = 4,510,970,221.18/103,842.57
  6. Step 6: Final answer
    x = 43,440.47

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1.5x scale

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.