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Finding the Fourth Proportional to 168,626.40, 253,231.20 and 89,894.40

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Solution

The fourth proportional to 168,626.40, 253,231.20 and 89,894.40 is: 134,997.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,626.40 : 253,231.20 = 89,894.40 : x
  2. Step 2: Convert to fraction form
    168,626.40/253,231.20 = 89,894.40/x
  3. Step 3: Cross multiply
    168,626.40x = 253,231.20 × 89,894.40
  4. Step 4: Simplify right side
    168,626.40x = 22,764,066,785.28
  5. Step 5: Solve for x
    x = 22,764,066,785.28/168,626.40
  6. Step 6: Final answer
    x = 134,997.05

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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.