Home / 143,568.75-198,121.37-79,037.46

Finding the Fourth Proportional to 143,568.75, 198,121.37 and 79,037.46

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Solution

The fourth proportional to 143,568.75, 198,121.37 and 79,037.46 is: 109,069.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,568.75 : 198,121.37 = 79,037.46 : x
  2. Step 2: Convert to fraction form
    143,568.75/198,121.37 = 79,037.46/x
  3. Step 3: Cross multiply
    143,568.75x = 198,121.37 × 79,037.46
  4. Step 4: Simplify right side
    143,568.75x = 15,659,009,856.52
  5. Step 5: Solve for x
    x = 15,659,009,856.52/143,568.75
  6. Step 6: Final answer
    x = 109,069.77

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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.