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Finding the Fourth Proportional to 159,207.85, 219,704.43 and 87,583.60

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Solution

The fourth proportional to 159,207.85, 219,704.43 and 87,583.60 is: 120,864.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,207.85 : 219,704.43 = 87,583.60 : x
  2. Step 2: Convert to fraction form
    159,207.85/219,704.43 = 87,583.60/x
  3. Step 3: Cross multiply
    159,207.85x = 219,704.43 × 87,583.60
  4. Step 4: Simplify right side
    159,207.85x = 19,242,504,915.35
  5. Step 5: Solve for x
    x = 19,242,504,915.35/159,207.85
  6. Step 6: Final answer
    x = 120,864.05

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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.