Home / 143,622.96-198,176.40-79,959.12

Finding the Fourth Proportional to 143,622.96, 198,176.40 and 79,959.12

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Solution

The fourth proportional to 143,622.96, 198,176.40 and 79,959.12 is: 110,330.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,622.96 : 198,176.40 = 79,959.12 : x
  2. Step 2: Convert to fraction form
    143,622.96/198,176.40 = 79,959.12/x
  3. Step 3: Cross multiply
    143,622.96x = 198,176.40 × 79,959.12
  4. Step 4: Simplify right side
    143,622.96x = 15,846,010,548.77
  5. Step 5: Solve for x
    x = 15,846,010,548.77/143,622.96
  6. Step 6: Final answer
    x = 110,330.62

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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.