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Finding the Fourth Proportional to 169,138.67, 253,394.80 and 84,800.39

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Solution

The fourth proportional to 169,138.67, 253,394.80 and 84,800.39 is: 127,043.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,138.67 : 253,394.80 = 84,800.39 : x
  2. Step 2: Convert to fraction form
    169,138.67/253,394.80 = 84,800.39/x
  3. Step 3: Cross multiply
    169,138.67x = 253,394.80 × 84,800.39
  4. Step 4: Simplify right side
    169,138.67x = 21,487,976,385.00
  5. Step 5: Solve for x
    x = 21,487,976,385.00/169,138.67
  6. Step 6: Final answer
    x = 127,043.55

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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.