Home / 143,912.23-198,663.64-105,604.09

Finding the Fourth Proportional to 143,912.23, 198,663.64 and 105,604.09

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Solution

The fourth proportional to 143,912.23, 198,663.64 and 105,604.09 is: 145,781.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,912.23 : 198,663.64 = 105,604.09 : x
  2. Step 2: Convert to fraction form
    143,912.23/198,663.64 = 105,604.09/x
  3. Step 3: Cross multiply
    143,912.23x = 198,663.64 × 105,604.09
  4. Step 4: Simplify right side
    143,912.23x = 20,979,692,157.62
  5. Step 5: Solve for x
    x = 20,979,692,157.62/143,912.23
  6. Step 6: Final answer
    x = 145,781.16

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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.