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Finding the Fourth Proportional to 136,540.20, 204,810.30 and 74,332.20

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Solution

The fourth proportional to 136,540.20, 204,810.30 and 74,332.20 is: 111,498.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,540.20 : 204,810.30 = 74,332.20 : x
  2. Step 2: Convert to fraction form
    136,540.20/204,810.30 = 74,332.20/x
  3. Step 3: Cross multiply
    136,540.20x = 204,810.30 × 74,332.20
  4. Step 4: Simplify right side
    136,540.20x = 15,224,000,181.66
  5. Step 5: Solve for x
    x = 15,224,000,181.66/136,540.20
  6. Step 6: Final answer
    x = 111,498.30

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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.