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Finding the Fourth Proportional to 158,382.96, 218,568.52 and 86,765.56

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Solution

The fourth proportional to 158,382.96, 218,568.52 and 86,765.56 is: 119,736.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,382.96 : 218,568.52 = 86,765.56 : x
  2. Step 2: Convert to fraction form
    158,382.96/218,568.52 = 86,765.56/x
  3. Step 3: Cross multiply
    158,382.96x = 218,568.52 × 86,765.56
  4. Step 4: Simplify right side
    158,382.96x = 18,964,220,036.17
  5. Step 5: Solve for x
    x = 18,964,220,036.17/158,382.96
  6. Step 6: Final answer
    x = 119,736.49

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1.5x scale

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.