Home / 143,768.61-198,402.03-79,240.14

Finding the Fourth Proportional to 143,768.61, 198,402.03 and 79,240.14

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Solution

The fourth proportional to 143,768.61, 198,402.03 and 79,240.14 is: 109,352.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,768.61 : 198,402.03 = 79,240.14 : x
  2. Step 2: Convert to fraction form
    143,768.61/198,402.03 = 79,240.14/x
  3. Step 3: Cross multiply
    143,768.61x = 198,402.03 × 79,240.14
  4. Step 4: Simplify right side
    143,768.61x = 15,721,404,633.48
  5. Step 5: Solve for x
    x = 15,721,404,633.48/143,768.61
  6. Step 6: Final answer
    x = 109,352.14

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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.