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Finding the Fourth Proportional to 120,361.32, 166,100.37 and 66,646.23

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Solution

The fourth proportional to 120,361.32, 166,100.37 and 66,646.23 is: 91,972.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,361.32 : 166,100.37 = 66,646.23 : x
  2. Step 2: Convert to fraction form
    120,361.32/166,100.37 = 66,646.23/x
  3. Step 3: Cross multiply
    120,361.32x = 166,100.37 × 66,646.23
  4. Step 4: Simplify right side
    120,361.32x = 11,069,963,462.11
  5. Step 5: Solve for x
    x = 11,069,963,462.11/120,361.32
  6. Step 6: Final answer
    x = 91,972.77

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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.