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Finding the Fourth Proportional to 120,602.80, 166,432.80 and 66,884.80

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Solution

The fourth proportional to 120,602.80, 166,432.80 and 66,884.80 is: 92,301.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,602.80 : 166,432.80 = 66,884.80 : x
  2. Step 2: Convert to fraction form
    120,602.80/166,432.80 = 66,884.80/x
  3. Step 3: Cross multiply
    120,602.80x = 166,432.80 × 66,884.80
  4. Step 4: Simplify right side
    120,602.80x = 11,131,824,541.44
  5. Step 5: Solve for x
    x = 11,131,824,541.44/120,602.80
  6. Step 6: Final answer
    x = 92,301.54

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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.