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Finding the Fourth Proportional to 162,611.60, 243,318.72 and 98,340.56

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Solution

The fourth proportional to 162,611.60, 243,318.72 and 98,340.56 is: 147,148.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,611.60 : 243,318.72 = 98,340.56 : x
  2. Step 2: Convert to fraction form
    162,611.60/243,318.72 = 98,340.56/x
  3. Step 3: Cross multiply
    162,611.60x = 243,318.72 × 98,340.56
  4. Step 4: Simplify right side
    162,611.60x = 23,928,099,183.28
  5. Step 5: Solve for x
    x = 23,928,099,183.28/162,611.60
  6. Step 6: Final answer
    x = 147,148.78

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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.