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Finding the Fourth Proportional to 174,521.60, 261,859.20 and 80,979.20

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Solution

The fourth proportional to 174,521.60, 261,859.20 and 80,979.20 is: 121,504.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,521.60 : 261,859.20 = 80,979.20 : x
  2. Step 2: Convert to fraction form
    174,521.60/261,859.20 = 80,979.20/x
  3. Step 3: Cross multiply
    174,521.60x = 261,859.20 × 80,979.20
  4. Step 4: Simplify right side
    174,521.60x = 21,205,148,528.64
  5. Step 5: Solve for x
    x = 21,205,148,528.64/174,521.60
  6. Step 6: Final answer
    x = 121,504.44

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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.