Home / 142,610.20-196,800.78-78,950.68

Finding the Fourth Proportional to 142,610.20, 196,800.78 and 78,950.68

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Solution

The fourth proportional to 142,610.20, 196,800.78 and 78,950.68 is: 108,951.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,610.20 : 196,800.78 = 78,950.68 : x
  2. Step 2: Convert to fraction form
    142,610.20/196,800.78 = 78,950.68/x
  3. Step 3: Cross multiply
    142,610.20x = 196,800.78 × 78,950.68
  4. Step 4: Simplify right side
    142,610.20x = 15,537,555,405.53
  5. Step 5: Solve for x
    x = 15,537,555,405.53/142,610.20
  6. Step 6: Final answer
    x = 108,951.22

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1.5x scale

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.