Home / 142,001.24-195,961.68-78,339.03

Finding the Fourth Proportional to 142,001.24, 195,961.68 and 78,339.03

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Solution

The fourth proportional to 142,001.24, 195,961.68 and 78,339.03 is: 108,107.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,001.24 : 195,961.68 = 78,339.03 : x
  2. Step 2: Convert to fraction form
    142,001.24/195,961.68 = 78,339.03/x
  3. Step 3: Cross multiply
    142,001.24x = 195,961.68 × 78,339.03
  4. Step 4: Simplify right side
    142,001.24x = 15,351,447,928.37
  5. Step 5: Solve for x
    x = 15,351,447,928.37/142,001.24
  6. Step 6: Final answer
    x = 108,107.85

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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.