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Finding the Fourth Proportional to 120,575.80, 166,395.54 and 66,857.68

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Solution

The fourth proportional to 120,575.80, 166,395.54 and 66,857.68 is: 92,264.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,575.80 : 166,395.54 = 66,857.68 : x
  2. Step 2: Convert to fraction form
    120,575.80/166,395.54 = 66,857.68/x
  3. Step 3: Cross multiply
    120,575.80x = 166,395.54 × 66,857.68
  4. Step 4: Simplify right side
    120,575.80x = 11,124,819,766.75
  5. Step 5: Solve for x
    x = 11,124,819,766.75/120,575.80
  6. Step 6: Final answer
    x = 92,264.12

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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.