Home / 143,870.43-198,536.92-79,339.67

Finding the Fourth Proportional to 143,870.43, 198,536.92 and 79,339.67

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Solution

The fourth proportional to 143,870.43, 198,536.92 and 79,339.67 is: 109,486.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,870.43 : 198,536.92 = 79,339.67 : x
  2. Step 2: Convert to fraction form
    143,870.43/198,536.92 = 79,339.67/x
  3. Step 3: Cross multiply
    143,870.43x = 198,536.92 × 79,339.67
  4. Step 4: Simplify right side
    143,870.43x = 15,751,852,524.58
  5. Step 5: Solve for x
    x = 15,751,852,524.58/143,870.43
  6. Step 6: Final answer
    x = 109,486.38

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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.