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Finding the Fourth Proportional to 136,253.25, 188,029.50 and 76,637.25

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Solution

The fourth proportional to 136,253.25, 188,029.50 and 76,637.25 is: 105,759.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,253.25 : 188,029.50 = 76,637.25 : x
  2. Step 2: Convert to fraction form
    136,253.25/188,029.50 = 76,637.25/x
  3. Step 3: Cross multiply
    136,253.25x = 188,029.50 × 76,637.25
  4. Step 4: Simplify right side
    136,253.25x = 14,410,063,798.88
  5. Step 5: Solve for x
    x = 14,410,063,798.88/136,253.25
  6. Step 6: Final answer
    x = 105,759.41

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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.