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Finding the Fourth Proportional to 162,043.80, 243,138.60 and 73,251.60

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Solution

The fourth proportional to 162,043.80, 243,138.60 and 73,251.60 is: 109,910.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,043.80 : 243,138.60 = 73,251.60 : x
  2. Step 2: Convert to fraction form
    162,043.80/243,138.60 = 73,251.60/x
  3. Step 3: Cross multiply
    162,043.80x = 243,138.60 × 73,251.60
  4. Step 4: Simplify right side
    162,043.80x = 17,810,291,471.76
  5. Step 5: Solve for x
    x = 17,810,291,471.76/162,043.80
  6. Step 6: Final answer
    x = 109,910.35

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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.