Home / 185,724.80-278,198.40-102,521.60

Finding the Fourth Proportional to 185,724.80, 278,198.40 and 102,521.60

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Solution

The fourth proportional to 185,724.80, 278,198.40 and 102,521.60 is: 153,567.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,724.80 : 278,198.40 = 102,521.60 : x
  2. Step 2: Convert to fraction form
    185,724.80/278,198.40 = 102,521.60/x
  3. Step 3: Cross multiply
    185,724.80x = 278,198.40 × 102,521.60
  4. Step 4: Simplify right side
    185,724.80x = 28,521,345,085.44
  5. Step 5: Solve for x
    x = 28,521,345,085.44/185,724.80
  6. Step 6: Final answer
    x = 153,567.78

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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.