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Finding the Fourth Proportional to 159,061.36, 219,504.60 and 87,446

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Solution

The fourth proportional to 159,061.36, 219,504.60 and 87,446 is: 120,675.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,061.36 : 219,504.60 = 87,446 : x
  2. Step 2: Convert to fraction form
    159,061.36/219,504.60 = 87,446/x
  3. Step 3: Cross multiply
    159,061.36x = 219,504.60 × 87,446
  4. Step 4: Simplify right side
    159,061.36x = 19,194,799,251.60
  5. Step 5: Solve for x
    x = 19,194,799,251.60/159,061.36
  6. Step 6: Final answer
    x = 120,675.44

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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.