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Finding the Fourth Proportional to 213,082.04, 319,540.02 and 79,889.64

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Solution

The fourth proportional to 213,082.04, 319,540.02 and 79,889.64 is: 119,803.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,082.04 : 319,540.02 = 79,889.64 : x
  2. Step 2: Convert to fraction form
    213,082.04/319,540.02 = 79,889.64/x
  3. Step 3: Cross multiply
    213,082.04x = 319,540.02 × 79,889.64
  4. Step 4: Simplify right side
    213,082.04x = 25,527,937,163.39
  5. Step 5: Solve for x
    x = 25,527,937,163.39/213,082.04
  6. Step 6: Final answer
    x = 119,803.33

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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.