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Finding the Fourth Proportional to 118,515.19, 177,842.94 and 43,687.90

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Solution

The fourth proportional to 118,515.19, 177,842.94 and 43,687.90 is: 65,557.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,515.19 : 177,842.94 = 43,687.90 : x
  2. Step 2: Convert to fraction form
    118,515.19/177,842.94 = 43,687.90/x
  3. Step 3: Cross multiply
    118,515.19x = 177,842.94 × 43,687.90
  4. Step 4: Simplify right side
    118,515.19x = 7,769,584,578.43
  5. Step 5: Solve for x
    x = 7,769,584,578.43/118,515.19
  6. Step 6: Final answer
    x = 65,557.71

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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.