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Finding the Fourth Proportional to 173,442.40, 259,990.80 and 79,784.80

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Solution

The fourth proportional to 173,442.40, 259,990.80 and 79,784.80 is: 119,597.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,442.40 : 259,990.80 = 79,784.80 : x
  2. Step 2: Convert to fraction form
    173,442.40/259,990.80 = 79,784.80/x
  3. Step 3: Cross multiply
    173,442.40x = 259,990.80 × 79,784.80
  4. Step 4: Simplify right side
    173,442.40x = 20,743,313,979.84
  5. Step 5: Solve for x
    x = 20,743,313,979.84/173,442.40
  6. Step 6: Final answer
    x = 119,597.71

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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.