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Finding the Fourth Proportional to 235,776.11, 325,371.06 and 128,346.95

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Solution

The fourth proportional to 235,776.11, 325,371.06 and 128,346.95 is: 177,118.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,776.11 : 325,371.06 = 128,346.95 : x
  2. Step 2: Convert to fraction form
    235,776.11/325,371.06 = 128,346.95/x
  3. Step 3: Cross multiply
    235,776.11x = 325,371.06 × 128,346.95
  4. Step 4: Simplify right side
    235,776.11x = 41,760,383,982.69
  5. Step 5: Solve for x
    x = 41,760,383,982.69/235,776.11
  6. Step 6: Final answer
    x = 177,118.81

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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.