Home / 143,958.12-198,662.89-79,427.35

Finding the Fourth Proportional to 143,958.12, 198,662.89 and 79,427.35

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Solution

The fourth proportional to 143,958.12, 198,662.89 and 79,427.35 is: 109,610.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,958.12 : 198,662.89 = 79,427.35 : x
  2. Step 2: Convert to fraction form
    143,958.12/198,662.89 = 79,427.35/x
  3. Step 3: Cross multiply
    143,958.12x = 198,662.89 × 79,427.35
  4. Step 4: Simplify right side
    143,958.12x = 15,779,266,896.04
  5. Step 5: Solve for x
    x = 15,779,266,896.04/143,958.12
  6. Step 6: Final answer
    x = 109,610.12

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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.