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Finding the Fourth Proportional to 120,630.54, 166,456.72 and 66,902.10

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Solution

The fourth proportional to 120,630.54, 166,456.72 and 66,902.10 is: 92,317.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,630.54 : 166,456.72 = 66,902.10 : x
  2. Step 2: Convert to fraction form
    120,630.54/166,456.72 = 66,902.10/x
  3. Step 3: Cross multiply
    120,630.54x = 166,456.72 × 66,902.10
  4. Step 4: Simplify right side
    120,630.54x = 11,136,303,586.53
  5. Step 5: Solve for x
    x = 11,136,303,586.53/120,630.54
  6. Step 6: Final answer
    x = 92,317.44

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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.