Home / 204,631.80-306,947.70-86,436.60

Finding the Fourth Proportional to 204,631.80, 306,947.70 and 86,436.60

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Solution

The fourth proportional to 204,631.80, 306,947.70 and 86,436.60 is: 129,654.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,631.80 : 306,947.70 = 86,436.60 : x
  2. Step 2: Convert to fraction form
    204,631.80/306,947.70 = 86,436.60/x
  3. Step 3: Cross multiply
    204,631.80x = 306,947.70 × 86,436.60
  4. Step 4: Simplify right side
    204,631.80x = 26,531,515,565.82
  5. Step 5: Solve for x
    x = 26,531,515,565.82/204,631.80
  6. Step 6: Final answer
    x = 129,654.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.