Home / 143,367.28-197,835.64-79,701.20

Finding the Fourth Proportional to 143,367.28, 197,835.64 and 79,701.20

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Solution

The fourth proportional to 143,367.28, 197,835.64 and 79,701.20 is: 109,981.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,367.28 : 197,835.64 = 79,701.20 : x
  2. Step 2: Convert to fraction form
    143,367.28/197,835.64 = 79,701.20/x
  3. Step 3: Cross multiply
    143,367.28x = 197,835.64 × 79,701.20
  4. Step 4: Simplify right side
    143,367.28x = 15,767,737,910.77
  5. Step 5: Solve for x
    x = 15,767,737,910.77/143,367.28
  6. Step 6: Final answer
    x = 109,981.43

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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.