Home / 120,874.66-166,803.27-66,426.70

Finding the Fourth Proportional to 120,874.66, 166,803.27 and 66,426.70

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Solution

The fourth proportional to 120,874.66, 166,803.27 and 66,426.70 is: 91,666.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,874.66 : 166,803.27 = 66,426.70 : x
  2. Step 2: Convert to fraction form
    120,874.66/166,803.27 = 66,426.70/x
  3. Step 3: Cross multiply
    120,874.66x = 166,803.27 × 66,426.70
  4. Step 4: Simplify right side
    120,874.66x = 11,080,190,775.31
  5. Step 5: Solve for x
    x = 11,080,190,775.31/120,874.66
  6. Step 6: Final answer
    x = 91,666.78

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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.