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Finding the Fourth Proportional to 80,170.66, 120,297.49 and 58,165.66

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Solution

The fourth proportional to 80,170.66, 120,297.49 and 58,165.66 is: 87,278.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,170.66 : 120,297.49 = 58,165.66 : x
  2. Step 2: Convert to fraction form
    80,170.66/120,297.49 = 58,165.66/x
  3. Step 3: Cross multiply
    80,170.66x = 120,297.49 × 58,165.66
  4. Step 4: Simplify right side
    80,170.66x = 6,997,182,907.15
  5. Step 5: Solve for x
    x = 6,997,182,907.15/80,170.66
  6. Step 6: Final answer
    x = 87,278.60

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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.