Home / 142,037.46-196,003.41-78,375.11

Finding the Fourth Proportional to 142,037.46, 196,003.41 and 78,375.11

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Solution

The fourth proportional to 142,037.46, 196,003.41 and 78,375.11 is: 108,153.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,037.46 : 196,003.41 = 78,375.11 : x
  2. Step 2: Convert to fraction form
    142,037.46/196,003.41 = 78,375.11/x
  3. Step 3: Cross multiply
    142,037.46x = 196,003.41 × 78,375.11
  4. Step 4: Simplify right side
    142,037.46x = 15,361,787,839.11
  5. Step 5: Solve for x
    x = 15,361,787,839.11/142,037.46
  6. Step 6: Final answer
    x = 108,153.07

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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.