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Finding the Fourth Proportional to 120,361.82, 166,101.06 and 66,646.73

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Solution

The fourth proportional to 120,361.82, 166,101.06 and 66,646.73 is: 91,973.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,361.82 : 166,101.06 = 66,646.73 : x
  2. Step 2: Convert to fraction form
    120,361.82/166,101.06 = 66,646.73/x
  3. Step 3: Cross multiply
    120,361.82x = 166,101.06 × 66,646.73
  4. Step 4: Simplify right side
    120,361.82x = 11,070,092,498.53
  5. Step 5: Solve for x
    x = 11,070,092,498.53/120,361.82
  6. Step 6: Final answer
    x = 91,973.46

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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.