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Finding the Fourth Proportional to 134,689.70, 202,006.20 and 68,067.20

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Solution

The fourth proportional to 134,689.70, 202,006.20 and 68,067.20 is: 102,086.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,689.70 : 202,006.20 = 68,067.20 : x
  2. Step 2: Convert to fraction form
    134,689.70/202,006.20 = 68,067.20/x
  3. Step 3: Cross multiply
    134,689.70x = 202,006.20 × 68,067.20
  4. Step 4: Simplify right side
    134,689.70x = 13,749,996,416.64
  5. Step 5: Solve for x
    x = 13,749,996,416.64/134,689.70
  6. Step 6: Final answer
    x = 102,086.47

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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.