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Finding the Fourth Proportional to 159,355.48, 219,910.02 and 87,735.64

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Solution

The fourth proportional to 159,355.48, 219,910.02 and 87,735.64 is: 121,074.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,355.48 : 219,910.02 = 87,735.64 : x
  2. Step 2: Convert to fraction form
    159,355.48/219,910.02 = 87,735.64/x
  3. Step 3: Cross multiply
    159,355.48x = 219,910.02 × 87,735.64
  4. Step 4: Simplify right side
    159,355.48x = 19,293,946,347.11
  5. Step 5: Solve for x
    x = 19,293,946,347.11/159,355.48
  6. Step 6: Final answer
    x = 121,074.88

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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.