Home / 143,494.11-198,021.87-79,831.89

Finding the Fourth Proportional to 143,494.11, 198,021.87 and 79,831.89

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Solution

The fourth proportional to 143,494.11, 198,021.87 and 79,831.89 is: 110,168.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,494.11 : 198,021.87 = 79,831.89 : x
  2. Step 2: Convert to fraction form
    143,494.11/198,021.87 = 79,831.89/x
  3. Step 3: Cross multiply
    143,494.11x = 198,021.87 × 79,831.89
  4. Step 4: Simplify right side
    143,494.11x = 15,808,460,143.43
  5. Step 5: Solve for x
    x = 15,808,460,143.43/143,494.11
  6. Step 6: Final answer
    x = 110,168.01

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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.