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Finding the Fourth Proportional to 168,642.40, 253,255.20 and 89,910.40

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Solution

The fourth proportional to 168,642.40, 253,255.20 and 89,910.40 is: 135,021.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,642.40 : 253,255.20 = 89,910.40 : x
  2. Step 2: Convert to fraction form
    168,642.40/253,255.20 = 89,910.40/x
  3. Step 3: Cross multiply
    168,642.40x = 253,255.20 × 89,910.40
  4. Step 4: Simplify right side
    168,642.40x = 22,770,276,334.08
  5. Step 5: Solve for x
    x = 22,770,276,334.08/168,642.40
  6. Step 6: Final answer
    x = 135,021.06

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1.5x scale

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.