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Finding the Fourth Proportional to 120,672.15, 166,528.71 and 66,962.16

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Solution

The fourth proportional to 120,672.15, 166,528.71 and 66,962.16 is: 92,408.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,672.15 : 166,528.71 = 66,962.16 : x
  2. Step 2: Convert to fraction form
    120,672.15/166,528.71 = 66,962.16/x
  3. Step 3: Cross multiply
    120,672.15x = 166,528.71 × 66,962.16
  4. Step 4: Simplify right side
    120,672.15x = 11,151,122,123.61
  5. Step 5: Solve for x
    x = 11,151,122,123.61/120,672.15
  6. Step 6: Final answer
    x = 92,408.42

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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.