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Finding the Fourth Proportional to 120,366.72, 166,098.96 and 66,648.72

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Solution

The fourth proportional to 120,366.72, 166,098.96 and 66,648.72 is: 91,971.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,366.72 : 166,098.96 = 66,648.72 : x
  2. Step 2: Convert to fraction form
    120,366.72/166,098.96 = 66,648.72/x
  3. Step 3: Cross multiply
    120,366.72x = 166,098.96 × 66,648.72
  4. Step 4: Simplify right side
    120,366.72x = 11,070,283,077.33
  5. Step 5: Solve for x
    x = 11,070,283,077.33/120,366.72
  6. Step 6: Final answer
    x = 91,971.29

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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.