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Finding the Fourth Proportional to 159,211.68, 219,620.88 and 99,492

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Solution

The fourth proportional to 159,211.68, 219,620.88 and 99,492 is: 137,241.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,211.68 : 219,620.88 = 99,492 : x
  2. Step 2: Convert to fraction form
    159,211.68/219,620.88 = 99,492/x
  3. Step 3: Cross multiply
    159,211.68x = 219,620.88 × 99,492
  4. Step 4: Simplify right side
    159,211.68x = 21,850,520,592.96
  5. Step 5: Solve for x
    x = 21,850,520,592.96/159,211.68
  6. Step 6: Final answer
    x = 137,241.94

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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.