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Finding the Fourth Proportional to 105,579.21, 158,392.16 and 58,169.88

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Solution

The fourth proportional to 105,579.21, 158,392.16 and 58,169.88 is: 87,267.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,579.21 : 158,392.16 = 58,169.88 : x
  2. Step 2: Convert to fraction form
    105,579.21/158,392.16 = 58,169.88/x
  3. Step 3: Cross multiply
    105,579.21x = 158,392.16 × 58,169.88
  4. Step 4: Simplify right side
    105,579.21x = 9,213,653,481.55
  5. Step 5: Solve for x
    x = 9,213,653,481.55/105,579.21
  6. Step 6: Final answer
    x = 87,267.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.