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Finding the Fourth Proportional to 156,522.32, 215,997 and 89,450.32

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Solution

The fourth proportional to 156,522.32, 215,997 and 89,450.32 is: 123,439.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,522.32 : 215,997 = 89,450.32 : x
  2. Step 2: Convert to fraction form
    156,522.32/215,997 = 89,450.32/x
  3. Step 3: Cross multiply
    156,522.32x = 215,997 × 89,450.32
  4. Step 4: Simplify right side
    156,522.32x = 19,321,000,769.04
  5. Step 5: Solve for x
    x = 19,321,000,769.04/156,522.32
  6. Step 6: Final answer
    x = 123,439.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.