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Finding the Fourth Proportional to 158,768.72, 219,093.35 and 86,169.96

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Solution

The fourth proportional to 158,768.72, 219,093.35 and 86,169.96 is: 118,910.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,768.72 : 219,093.35 = 86,169.96 : x
  2. Step 2: Convert to fraction form
    158,768.72/219,093.35 = 86,169.96/x
  3. Step 3: Cross multiply
    158,768.72x = 219,093.35 × 86,169.96
  4. Step 4: Simplify right side
    158,768.72x = 18,879,264,774.92
  5. Step 5: Solve for x
    x = 18,879,264,774.92/158,768.72
  6. Step 6: Final answer
    x = 118,910.48

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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.