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Finding the Fourth Proportional to 159,181.75, 219,668.46 and 87,557.50

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Solution

The fourth proportional to 159,181.75, 219,668.46 and 87,557.50 is: 120,828.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,181.75 : 219,668.46 = 87,557.50 : x
  2. Step 2: Convert to fraction form
    159,181.75/219,668.46 = 87,557.50/x
  3. Step 3: Cross multiply
    159,181.75x = 219,668.46 × 87,557.50
  4. Step 4: Simplify right side
    159,181.75x = 19,233,621,186.45
  5. Step 5: Solve for x
    x = 19,233,621,186.45/159,181.75
  6. Step 6: Final answer
    x = 120,828.05

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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.