Home / 143,662.28-198,251.70-80,005.64

Finding the Fourth Proportional to 143,662.28, 198,251.70 and 80,005.64

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Solution

The fourth proportional to 143,662.28, 198,251.70 and 80,005.64 is: 110,406.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,662.28 : 198,251.70 = 80,005.64 : x
  2. Step 2: Convert to fraction form
    143,662.28/198,251.70 = 80,005.64/x
  3. Step 3: Cross multiply
    143,662.28x = 198,251.70 × 80,005.64
  4. Step 4: Simplify right side
    143,662.28x = 15,861,254,139.59
  5. Step 5: Solve for x
    x = 15,861,254,139.59/143,662.28
  6. Step 6: Final answer
    x = 110,406.53

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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.