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Finding the Fourth Proportional to 115,434.40, 173,167.80 and 36,540.40

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Solution

The fourth proportional to 115,434.40, 173,167.80 and 36,540.40 is: 54,815.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,434.40 : 173,167.80 = 36,540.40 : x
  2. Step 2: Convert to fraction form
    115,434.40/173,167.80 = 36,540.40/x
  3. Step 3: Cross multiply
    115,434.40x = 173,167.80 × 36,540.40
  4. Step 4: Simplify right side
    115,434.40x = 6,327,620,679.12
  5. Step 5: Solve for x
    x = 6,327,620,679.12/115,434.40
  6. Step 6: Final answer
    x = 54,815.73

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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.