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Finding the Fourth Proportional to 159,136.98, 219,604.01 and 87,516.78

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Solution

The fourth proportional to 159,136.98, 219,604.01 and 87,516.78 is: 120,770.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,136.98 : 219,604.01 = 87,516.78 : x
  2. Step 2: Convert to fraction form
    159,136.98/219,604.01 = 87,516.78/x
  3. Step 3: Cross multiply
    159,136.98x = 219,604.01 × 87,516.78
  4. Step 4: Simplify right side
    159,136.98x = 19,219,035,392.70
  5. Step 5: Solve for x
    x = 19,219,035,392.70/159,136.98
  6. Step 6: Final answer
    x = 120,770.39

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1.5x scale

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.