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Finding the Fourth Proportional to 158,796.50, 219,135.11 and 87,175.89

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Solution

The fourth proportional to 158,796.50, 219,135.11 and 87,175.89 is: 120,300.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,796.50 : 219,135.11 = 87,175.89 : x
  2. Step 2: Convert to fraction form
    158,796.50/219,135.11 = 87,175.89/x
  3. Step 3: Cross multiply
    158,796.50x = 219,135.11 × 87,175.89
  4. Step 4: Simplify right side
    158,796.50x = 19,103,297,808.62
  5. Step 5: Solve for x
    x = 19,103,297,808.62/158,796.50
  6. Step 6: Final answer
    x = 120,300.50

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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.