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Finding the Fourth Proportional to 143,558.98, 198,109.42 and 79,896.79

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Solution

The fourth proportional to 143,558.98, 198,109.42 and 79,896.79 is: 110,256.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,558.98 : 198,109.42 = 79,896.79 : x
  2. Step 2: Convert to fraction form
    143,558.98/198,109.42 = 79,896.79/x
  3. Step 3: Cross multiply
    143,558.98x = 198,109.42 × 79,896.79
  4. Step 4: Simplify right side
    143,558.98x = 15,828,306,726.76
  5. Step 5: Solve for x
    x = 15,828,306,726.76/143,558.98
  6. Step 6: Final answer
    x = 110,256.47

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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.