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Finding the Fourth Proportional to 159,701.70, 239,466.15 and 66,216.90

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Solution

The fourth proportional to 159,701.70, 239,466.15 and 66,216.90 is: 99,289.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,701.70 : 239,466.15 = 66,216.90 : x
  2. Step 2: Convert to fraction form
    159,701.70/239,466.15 = 66,216.90/x
  3. Step 3: Cross multiply
    159,701.70x = 239,466.15 × 66,216.90
  4. Step 4: Simplify right side
    159,701.70x = 15,856,706,107.94
  5. Step 5: Solve for x
    x = 15,856,706,107.94/159,701.70
  6. Step 6: Final answer
    x = 99,289.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.