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Finding the Fourth Proportional to 120,649.62, 166,497.48 and 66,938.16

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Solution

The fourth proportional to 120,649.62, 166,497.48 and 66,938.16 is: 92,375.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,649.62 : 166,497.48 = 66,938.16 : x
  2. Step 2: Convert to fraction form
    120,649.62/166,497.48 = 66,938.16/x
  3. Step 3: Cross multiply
    120,649.62x = 166,497.48 × 66,938.16
  4. Step 4: Simplify right side
    120,649.62x = 11,145,034,955.84
  5. Step 5: Solve for x
    x = 11,145,034,955.84/120,649.62
  6. Step 6: Final answer
    x = 92,375.22

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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.