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Finding the Fourth Proportional to 120,332.88, 166,060.68 and 66,618.78

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Solution

The fourth proportional to 120,332.88, 166,060.68 and 66,618.78 is: 91,934.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,332.88 : 166,060.68 = 66,618.78 : x
  2. Step 2: Convert to fraction form
    120,332.88/166,060.68 = 66,618.78/x
  3. Step 3: Cross multiply
    120,332.88x = 166,060.68 × 66,618.78
  4. Step 4: Simplify right side
    120,332.88x = 11,062,759,907.57
  5. Step 5: Solve for x
    x = 11,062,759,907.57/120,332.88
  6. Step 6: Final answer
    x = 91,934.64

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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.