Home / 143,606.04-198,180.50-79,081.94

Finding the Fourth Proportional to 143,606.04, 198,180.50 and 79,081.94

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Solution

The fourth proportional to 143,606.04, 198,180.50 and 79,081.94 is: 109,135.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,606.04 : 198,180.50 = 79,081.94 : x
  2. Step 2: Convert to fraction form
    143,606.04/198,180.50 = 79,081.94/x
  3. Step 3: Cross multiply
    143,606.04x = 198,180.50 × 79,081.94
  4. Step 4: Simplify right side
    143,606.04x = 15,672,497,023.86
  5. Step 5: Solve for x
    x = 15,672,497,023.86/143,606.04
  6. Step 6: Final answer
    x = 109,135.36

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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.