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Finding the Fourth Proportional to 136,076.60, 187,788.84 and 75,644.94

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Solution

The fourth proportional to 136,076.60, 187,788.84 and 75,644.94 is: 104,391.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,076.60 : 187,788.84 = 75,644.94 : x
  2. Step 2: Convert to fraction form
    136,076.60/187,788.84 = 75,644.94/x
  3. Step 3: Cross multiply
    136,076.60x = 187,788.84 × 75,644.94
  4. Step 4: Simplify right side
    136,076.60x = 14,205,275,534.47
  5. Step 5: Solve for x
    x = 14,205,275,534.47/136,076.60
  6. Step 6: Final answer
    x = 104,391.76

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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.