Home / 143,021.86-197,369.53-79,359.51

Finding the Fourth Proportional to 143,021.86, 197,369.53 and 79,359.51

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Solution

The fourth proportional to 143,021.86, 197,369.53 and 79,359.51 is: 109,515.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,021.86 : 197,369.53 = 79,359.51 : x
  2. Step 2: Convert to fraction form
    143,021.86/197,369.53 = 79,359.51/x
  3. Step 3: Cross multiply
    143,021.86x = 197,369.53 × 79,359.51
  4. Step 4: Simplify right side
    143,021.86x = 15,663,149,189.73
  5. Step 5: Solve for x
    x = 15,663,149,189.73/143,021.86
  6. Step 6: Final answer
    x = 109,515.77

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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.