Home / 143,035.20-197,389-79,373.12

Finding the Fourth Proportional to 143,035.20, 197,389 and 79,373.12

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Solution

The fourth proportional to 143,035.20, 197,389 and 79,373.12 is: 109,535.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,035.20 : 197,389 = 79,373.12 : x
  2. Step 2: Convert to fraction form
    143,035.20/197,389 = 79,373.12/x
  3. Step 3: Cross multiply
    143,035.20x = 197,389 × 79,373.12
  4. Step 4: Simplify right side
    143,035.20x = 15,667,380,783.68
  5. Step 5: Solve for x
    x = 15,667,380,783.68/143,035.20
  6. Step 6: Final answer
    x = 109,535.14

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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.