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Finding the Fourth Proportional to 173,285.28, 259,850.16 and 79,740

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Solution

The fourth proportional to 173,285.28, 259,850.16 and 79,740 is: 119,574.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,285.28 : 259,850.16 = 79,740 : x
  2. Step 2: Convert to fraction form
    173,285.28/259,850.16 = 79,740/x
  3. Step 3: Cross multiply
    173,285.28x = 259,850.16 × 79,740
  4. Step 4: Simplify right side
    173,285.28x = 20,720,451,758.40
  5. Step 5: Solve for x
    x = 20,720,451,758.40/173,285.28
  6. Step 6: Final answer
    x = 119,574.22

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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.