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Finding the Fourth Proportional to 173,479.40, 260,046.30 and 79,821.80

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Solution

The fourth proportional to 173,479.40, 260,046.30 and 79,821.80 is: 119,653.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,479.40 : 260,046.30 = 79,821.80 : x
  2. Step 2: Convert to fraction form
    173,479.40/260,046.30 = 79,821.80/x
  3. Step 3: Cross multiply
    173,479.40x = 260,046.30 × 79,821.80
  4. Step 4: Simplify right side
    173,479.40x = 20,757,363,749.34
  5. Step 5: Solve for x
    x = 20,757,363,749.34/173,479.40
  6. Step 6: Final answer
    x = 119,653.19

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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.