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Finding the Fourth Proportional to 120,627.84, 166,467.78 and 66,914.40

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Solution

The fourth proportional to 120,627.84, 166,467.78 and 66,914.40 is: 92,342.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,627.84 : 166,467.78 = 66,914.40 : x
  2. Step 2: Convert to fraction form
    120,627.84/166,467.78 = 66,914.40/x
  3. Step 3: Cross multiply
    120,627.84x = 166,467.78 × 66,914.40
  4. Step 4: Simplify right side
    120,627.84x = 11,139,091,618.03
  5. Step 5: Solve for x
    x = 11,139,091,618.03/120,627.84
  6. Step 6: Final answer
    x = 92,342.63

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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.