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Finding the Fourth Proportional to 168,540.40, 253,102.20 and 89,808.40

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Solution

The fourth proportional to 168,540.40, 253,102.20 and 89,808.40 is: 134,867.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,540.40 : 253,102.20 = 89,808.40 : x
  2. Step 2: Convert to fraction form
    168,540.40/253,102.20 = 89,808.40/x
  3. Step 3: Cross multiply
    168,540.40x = 253,102.20 × 89,808.40
  4. Step 4: Simplify right side
    168,540.40x = 22,730,703,618.48
  5. Step 5: Solve for x
    x = 22,730,703,618.48/168,540.40
  6. Step 6: Final answer
    x = 134,867.98

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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.