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Finding the Fourth Proportional to 158,768.46, 219,093 and 86,169.72

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Solution

The fourth proportional to 158,768.46, 219,093 and 86,169.72 is: 118,910.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,768.46 : 219,093 = 86,169.72 : x
  2. Step 2: Convert to fraction form
    158,768.46/219,093 = 86,169.72/x
  3. Step 3: Cross multiply
    158,768.46x = 219,093 × 86,169.72
  4. Step 4: Simplify right side
    158,768.46x = 18,879,182,463.96
  5. Step 5: Solve for x
    x = 18,879,182,463.96/158,768.46
  6. Step 6: Final answer
    x = 118,910.16

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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.