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Finding the Fourth Proportional to 136,694.60, 188,644.02 and 76,270.52

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Solution

The fourth proportional to 136,694.60, 188,644.02 and 76,270.52 is: 105,256.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,694.60 : 188,644.02 = 76,270.52 : x
  2. Step 2: Convert to fraction form
    136,694.60/188,644.02 = 76,270.52/x
  3. Step 3: Cross multiply
    136,694.60x = 188,644.02 × 76,270.52
  4. Step 4: Simplify right side
    136,694.60x = 14,387,977,500.29
  5. Step 5: Solve for x
    x = 14,387,977,500.29/136,694.60
  6. Step 6: Final answer
    x = 105,256.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.