Home / 143,581.86-198,149.49-79,923.69

Finding the Fourth Proportional to 143,581.86, 198,149.49 and 79,923.69

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Solution

The fourth proportional to 143,581.86, 198,149.49 and 79,923.69 is: 110,298.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,581.86 : 198,149.49 = 79,923.69 : x
  2. Step 2: Convert to fraction form
    143,581.86/198,149.49 = 79,923.69/x
  3. Step 3: Cross multiply
    143,581.86x = 198,149.49 × 79,923.69
  4. Step 4: Simplify right side
    143,581.86x = 15,836,838,412.42
  5. Step 5: Solve for x
    x = 15,836,838,412.42/143,581.86
  6. Step 6: Final answer
    x = 110,298.32

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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.