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Finding the Fourth Proportional to 120,662.60, 166,511.23 and 66,214.60

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Solution

The fourth proportional to 120,662.60, 166,511.23 and 66,214.60 is: 91,374.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,662.60 : 166,511.23 = 66,214.60 : x
  2. Step 2: Convert to fraction form
    120,662.60/166,511.23 = 66,214.60/x
  3. Step 3: Cross multiply
    120,662.60x = 166,511.23 × 66,214.60
  4. Step 4: Simplify right side
    120,662.60x = 11,025,473,908.14
  5. Step 5: Solve for x
    x = 11,025,473,908.14/120,662.60
  6. Step 6: Final answer
    x = 91,374.41

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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.