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Finding the Fourth Proportional to 120,630.14, 166,468.98 and 66,914.60

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Solution

The fourth proportional to 120,630.14, 166,468.98 and 66,914.60 is: 92,341.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,630.14 : 166,468.98 = 66,914.60 : x
  2. Step 2: Convert to fraction form
    120,630.14/166,468.98 = 66,914.60/x
  3. Step 3: Cross multiply
    120,630.14x = 166,468.98 × 66,914.60
  4. Step 4: Simplify right side
    120,630.14x = 11,139,205,209.11
  5. Step 5: Solve for x
    x = 11,139,205,209.11/120,630.14
  6. Step 6: Final answer
    x = 92,341.81

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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.