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Finding the Fourth Proportional to 174,490.80, 261,736.20 and 79,720.80

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Solution

The fourth proportional to 174,490.80, 261,736.20 and 79,720.80 is: 119,581.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,490.80 : 261,736.20 = 79,720.80 : x
  2. Step 2: Convert to fraction form
    174,490.80/261,736.20 = 79,720.80/x
  3. Step 3: Cross multiply
    174,490.80x = 261,736.20 × 79,720.80
  4. Step 4: Simplify right side
    174,490.80x = 20,865,819,252.96
  5. Step 5: Solve for x
    x = 20,865,819,252.96/174,490.80
  6. Step 6: Final answer
    x = 119,581.20

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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.