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Finding the Fourth Proportional to 143,521.88, 198,060.19 and 79,863.77

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Solution

The fourth proportional to 143,521.88, 198,060.19 and 79,863.77 is: 110,212.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,521.88 : 198,060.19 = 79,863.77 : x
  2. Step 2: Convert to fraction form
    143,521.88/198,060.19 = 79,863.77/x
  3. Step 3: Cross multiply
    143,521.88x = 198,060.19 × 79,863.77
  4. Step 4: Simplify right side
    143,521.88x = 15,817,833,755.81
  5. Step 5: Solve for x
    x = 15,817,833,755.81/143,521.88
  6. Step 6: Final answer
    x = 110,212.01

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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.