Home / 120,531.72-166,333.77-66,816.60

Finding the Fourth Proportional to 120,531.72, 166,333.77 and 66,816.60

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Solution

The fourth proportional to 120,531.72, 166,333.77 and 66,816.60 is: 92,206.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,531.72 : 166,333.77 = 66,816.60 : x
  2. Step 2: Convert to fraction form
    120,531.72/166,333.77 = 66,816.60/x
  3. Step 3: Cross multiply
    120,531.72x = 166,333.77 × 66,816.60
  4. Step 4: Simplify right side
    120,531.72x = 11,113,856,976.58
  5. Step 5: Solve for x
    x = 11,113,856,976.58/120,531.72
  6. Step 6: Final answer
    x = 92,206.91

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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.