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Finding the Fourth Proportional to 159,176.85, 219,664.56 and 87,561.41

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Solution

The fourth proportional to 159,176.85, 219,664.56 and 87,561.41 is: 120,835.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,176.85 : 219,664.56 = 87,561.41 : x
  2. Step 2: Convert to fraction form
    159,176.85/219,664.56 = 87,561.41/x
  3. Step 3: Cross multiply
    159,176.85x = 219,664.56 × 87,561.41
  4. Step 4: Simplify right side
    159,176.85x = 19,234,137,338.13
  5. Step 5: Solve for x
    x = 19,234,137,338.13/159,176.85
  6. Step 6: Final answer
    x = 120,835.02

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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.