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Finding the Fourth Proportional to 207,251.26, 310,876.90 and 67,009.90

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Solution

The fourth proportional to 207,251.26, 310,876.90 and 67,009.90 is: 100,514.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,251.26 : 310,876.90 = 67,009.90 : x
  2. Step 2: Convert to fraction form
    207,251.26/310,876.90 = 67,009.90/x
  3. Step 3: Cross multiply
    207,251.26x = 310,876.90 × 67,009.90
  4. Step 4: Simplify right side
    207,251.26x = 20,831,829,981.31
  5. Step 5: Solve for x
    x = 20,831,829,981.31/207,251.26
  6. Step 6: Final answer
    x = 100,514.85

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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.