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Finding the Fourth Proportional to 118,508.56, 177,679.84 and 43,619

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Solution

The fourth proportional to 118,508.56, 177,679.84 and 43,619 is: 65,397.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,508.56 : 177,679.84 = 43,619 : x
  2. Step 2: Convert to fraction form
    118,508.56/177,679.84 = 43,619/x
  3. Step 3: Cross multiply
    118,508.56x = 177,679.84 × 43,619
  4. Step 4: Simplify right side
    118,508.56x = 7,750,216,940.96
  5. Step 5: Solve for x
    x = 7,750,216,940.96/118,508.56
  6. Step 6: Final answer
    x = 65,397.95

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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.