Home / 120,528.27-166,329.05-66,821.31

Finding the Fourth Proportional to 120,528.27, 166,329.05 and 66,821.31

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Solution

The fourth proportional to 120,528.27, 166,329.05 and 66,821.31 is: 92,213.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,528.27 : 166,329.05 = 66,821.31 : x
  2. Step 2: Convert to fraction form
    120,528.27/166,329.05 = 66,821.31/x
  3. Step 3: Cross multiply
    120,528.27x = 166,329.05 × 66,821.31
  4. Step 4: Simplify right side
    120,528.27x = 11,114,324,677.95
  5. Step 5: Solve for x
    x = 11,114,324,677.95/120,528.27
  6. Step 6: Final answer
    x = 92,213.43

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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.