Home / 120,614.72-166,458.51-66,917

Finding the Fourth Proportional to 120,614.72, 166,458.51 and 66,917

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Solution

The fourth proportional to 120,614.72, 166,458.51 and 66,917 is: 92,351.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,614.72 : 166,458.51 = 66,917 : x
  2. Step 2: Convert to fraction form
    120,614.72/166,458.51 = 66,917/x
  3. Step 3: Cross multiply
    120,614.72x = 166,458.51 × 66,917
  4. Step 4: Simplify right side
    120,614.72x = 11,138,904,113.67
  5. Step 5: Solve for x
    x = 11,138,904,113.67/120,614.72
  6. Step 6: Final answer
    x = 92,351.12

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1.5x scale

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.