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Finding the Fourth Proportional to 169,285.80, 254,011.82 and 68,079.76

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Solution

The fourth proportional to 169,285.80, 254,011.82 and 68,079.76 is: 102,153.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,285.80 : 254,011.82 = 68,079.76 : x
  2. Step 2: Convert to fraction form
    169,285.80/254,011.82 = 68,079.76/x
  3. Step 3: Cross multiply
    169,285.80x = 254,011.82 × 68,079.76
  4. Step 4: Simplify right side
    169,285.80x = 17,293,063,742.76
  5. Step 5: Solve for x
    x = 17,293,063,742.76/169,285.80
  6. Step 6: Final answer
    x = 102,153.07

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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.