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Finding the Fourth Proportional to 120,495.60, 166,283.94 and 66,784.08

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Solution

The fourth proportional to 120,495.60, 166,283.94 and 66,784.08 is: 92,162.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,495.60 : 166,283.94 = 66,784.08 : x
  2. Step 2: Convert to fraction form
    120,495.60/166,283.94 = 66,784.08/x
  3. Step 3: Cross multiply
    120,495.60x = 166,283.94 × 66,784.08
  4. Step 4: Simplify right side
    120,495.60x = 11,105,120,825.68
  5. Step 5: Solve for x
    x = 11,105,120,825.68/120,495.60
  6. Step 6: Final answer
    x = 92,162.04

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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.