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Finding the Fourth Proportional to 158,699.44, 218,997.70 and 87,077.89

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Solution

The fourth proportional to 158,699.44, 218,997.70 and 87,077.89 is: 120,163.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,699.44 : 218,997.70 = 87,077.89 : x
  2. Step 2: Convert to fraction form
    158,699.44/218,997.70 = 87,077.89/x
  3. Step 3: Cross multiply
    158,699.44x = 218,997.70 × 87,077.89
  4. Step 4: Simplify right side
    158,699.44x = 19,069,857,630.85
  5. Step 5: Solve for x
    x = 19,069,857,630.85/158,699.44
  6. Step 6: Final answer
    x = 120,163.36

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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.