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Finding the Fourth Proportional to 143,886.69, 198,566.10 and 79,363.34

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Solution

The fourth proportional to 143,886.69, 198,566.10 and 79,363.34 is: 109,522.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,886.69 : 198,566.10 = 79,363.34 : x
  2. Step 2: Convert to fraction form
    143,886.69/198,566.10 = 79,363.34/x
  3. Step 3: Cross multiply
    143,886.69x = 198,566.10 × 79,363.34
  4. Step 4: Simplify right side
    143,886.69x = 15,758,867,913.94
  5. Step 5: Solve for x
    x = 15,758,867,913.94/143,886.69
  6. Step 6: Final answer
    x = 109,522.76

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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.