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Finding the Fourth Proportional to 135,911.90, 203,867.85 and 88,672.70

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Solution

The fourth proportional to 135,911.90, 203,867.85 and 88,672.70 is: 133,009.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,911.90 : 203,867.85 = 88,672.70 : x
  2. Step 2: Convert to fraction form
    135,911.90/203,867.85 = 88,672.70/x
  3. Step 3: Cross multiply
    135,911.90x = 203,867.85 × 88,672.70
  4. Step 4: Simplify right side
    135,911.90x = 18,077,512,702.70
  5. Step 5: Solve for x
    x = 18,077,512,702.70/135,911.90
  6. Step 6: Final answer
    x = 133,009.05

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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.