Home / 142,769.94-197,021.52-79,107.54

Finding the Fourth Proportional to 142,769.94, 197,021.52 and 79,107.54

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Solution

The fourth proportional to 142,769.94, 197,021.52 and 79,107.54 is: 109,167.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,769.94 : 197,021.52 = 79,107.54 : x
  2. Step 2: Convert to fraction form
    142,769.94/197,021.52 = 79,107.54/x
  3. Step 3: Cross multiply
    142,769.94x = 197,021.52 × 79,107.54
  4. Step 4: Simplify right side
    142,769.94x = 15,585,887,774.26
  5. Step 5: Solve for x
    x = 15,585,887,774.26/142,769.94
  6. Step 6: Final answer
    x = 109,167.85

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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.