Home / 142,684.62-196,902.36-79,021.05

Finding the Fourth Proportional to 142,684.62, 196,902.36 and 79,021.05

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Solution

The fourth proportional to 142,684.62, 196,902.36 and 79,021.05 is: 109,047.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,684.62 : 196,902.36 = 79,021.05 : x
  2. Step 2: Convert to fraction form
    142,684.62/196,902.36 = 79,021.05/x
  3. Step 3: Cross multiply
    142,684.62x = 196,902.36 × 79,021.05
  4. Step 4: Simplify right side
    142,684.62x = 15,559,431,234.68
  5. Step 5: Solve for x
    x = 15,559,431,234.68/142,684.62
  6. Step 6: Final answer
    x = 109,047.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.