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Finding the Fourth Proportional to 123,540.30, 185,310.45 and 73,676.70

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Solution

The fourth proportional to 123,540.30, 185,310.45 and 73,676.70 is: 110,515.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,540.30 : 185,310.45 = 73,676.70 : x
  2. Step 2: Convert to fraction form
    123,540.30/185,310.45 = 73,676.70/x
  3. Step 3: Cross multiply
    123,540.30x = 185,310.45 × 73,676.70
  4. Step 4: Simplify right side
    123,540.30x = 13,653,062,431.52
  5. Step 5: Solve for x
    x = 13,653,062,431.52/123,540.30
  6. Step 6: Final answer
    x = 110,515.05

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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.