Home / 143,658.43-198,248.93-79,998.51

Finding the Fourth Proportional to 143,658.43, 198,248.93 and 79,998.51

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Solution

The fourth proportional to 143,658.43, 198,248.93 and 79,998.51 is: 110,398.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,658.43 : 198,248.93 = 79,998.51 : x
  2. Step 2: Convert to fraction form
    143,658.43/198,248.93 = 79,998.51/x
  3. Step 3: Cross multiply
    143,658.43x = 198,248.93 × 79,998.51
  4. Step 4: Simplify right side
    143,658.43x = 15,859,619,009.09
  5. Step 5: Solve for x
    x = 15,859,619,009.09/143,658.43
  6. Step 6: Final answer
    x = 110,398.11

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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.