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Finding the Fourth Proportional to 136,819.63, 205,229.44 and 69,341.16

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Solution

The fourth proportional to 136,819.63, 205,229.44 and 69,341.16 is: 104,011.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,819.63 : 205,229.44 = 69,341.16 : x
  2. Step 2: Convert to fraction form
    136,819.63/205,229.44 = 69,341.16/x
  3. Step 3: Cross multiply
    136,819.63x = 205,229.44 × 69,341.16
  4. Step 4: Simplify right side
    136,819.63x = 14,230,846,062.90
  5. Step 5: Solve for x
    x = 14,230,846,062.90/136,819.63
  6. Step 6: Final answer
    x = 104,011.73

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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.