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Finding the Fourth Proportional to 136,759.97, 188,726.28 and 76,329.52

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Solution

The fourth proportional to 136,759.97, 188,726.28 and 76,329.52 is: 105,333.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,759.97 : 188,726.28 = 76,329.52 : x
  2. Step 2: Convert to fraction form
    136,759.97/188,726.28 = 76,329.52/x
  3. Step 3: Cross multiply
    136,759.97x = 188,726.28 × 76,329.52
  4. Step 4: Simplify right side
    136,759.97x = 14,405,386,363.79
  5. Step 5: Solve for x
    x = 14,405,386,363.79/136,759.97
  6. Step 6: Final answer
    x = 105,333.35

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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.