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Finding the Fourth Proportional to 136,867.36, 205,308.33 and 43,380.40

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Solution

The fourth proportional to 136,867.36, 205,308.33 and 43,380.40 is: 65,072.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,867.36 : 205,308.33 = 43,380.40 : x
  2. Step 2: Convert to fraction form
    136,867.36/205,308.33 = 43,380.40/x
  3. Step 3: Cross multiply
    136,867.36x = 205,308.33 × 43,380.40
  4. Step 4: Simplify right side
    136,867.36x = 8,906,356,235.29
  5. Step 5: Solve for x
    x = 8,906,356,235.29/136,867.36
  6. Step 6: Final answer
    x = 65,072.90

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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.