Home / 143,883.69-198,561.96-79,360.34

Finding the Fourth Proportional to 143,883.69, 198,561.96 and 79,360.34

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Solution

The fourth proportional to 143,883.69, 198,561.96 and 79,360.34 is: 109,518.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,883.69 : 198,561.96 = 79,360.34 : x
  2. Step 2: Convert to fraction form
    143,883.69/198,561.96 = 79,360.34/x
  3. Step 3: Cross multiply
    143,883.69x = 198,561.96 × 79,360.34
  4. Step 4: Simplify right side
    143,883.69x = 15,757,943,663.86
  5. Step 5: Solve for x
    x = 15,757,943,663.86/143,883.69
  6. Step 6: Final answer
    x = 109,518.62

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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.