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Finding the Fourth Proportional to 173,720, 260,463.36 and 80,174.72

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Solution

The fourth proportional to 173,720, 260,463.36 and 80,174.72 is: 120,208.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,720 : 260,463.36 = 80,174.72 : x
  2. Step 2: Convert to fraction form
    173,720/260,463.36 = 80,174.72/x
  3. Step 3: Cross multiply
    173,720x = 260,463.36 × 80,174.72
  4. Step 4: Simplify right side
    173,720x = 20,882,576,958.26
  5. Step 5: Solve for x
    x = 20,882,576,958.26/173,720
  6. Step 6: Final answer
    x = 120,208.25

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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.