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Finding the Fourth Proportional to 173,528.40, 260,379.72 and 68,422.80

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Solution

The fourth proportional to 173,528.40, 260,379.72 and 68,422.80 is: 102,668.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,528.40 : 260,379.72 = 68,422.80 : x
  2. Step 2: Convert to fraction form
    173,528.40/260,379.72 = 68,422.80/x
  3. Step 3: Cross multiply
    173,528.40x = 260,379.72 × 68,422.80
  4. Step 4: Simplify right side
    173,528.40x = 17,815,909,505.62
  5. Step 5: Solve for x
    x = 17,815,909,505.62/173,528.40
  6. Step 6: Final answer
    x = 102,668.55

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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.