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Finding the Fourth Proportional to 117,540.60, 176,310.90 and 115,207.80

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Solution

The fourth proportional to 117,540.60, 176,310.90 and 115,207.80 is: 172,811.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,540.60 : 176,310.90 = 115,207.80 : x
  2. Step 2: Convert to fraction form
    117,540.60/176,310.90 = 115,207.80/x
  3. Step 3: Cross multiply
    117,540.60x = 176,310.90 × 115,207.80
  4. Step 4: Simplify right side
    117,540.60x = 20,312,390,905.02
  5. Step 5: Solve for x
    x = 20,312,390,905.02/117,540.60
  6. Step 6: Final answer
    x = 172,811.70

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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.