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Finding the Fourth Proportional to 108,614.88, 162,711.60 and 80,100

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Solution

The fourth proportional to 108,614.88, 162,711.60 and 80,100 is: 119,994.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,614.88 : 162,711.60 = 80,100 : x
  2. Step 2: Convert to fraction form
    108,614.88/162,711.60 = 80,100/x
  3. Step 3: Cross multiply
    108,614.88x = 162,711.60 × 80,100
  4. Step 4: Simplify right side
    108,614.88x = 13,033,199,160
  5. Step 5: Solve for x
    x = 13,033,199,160/108,614.88
  6. Step 6: Final answer
    x = 119,994.60

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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.