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Finding the Fourth Proportional to 120,725.60, 166,611.60 and 67,016.16

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Solution

The fourth proportional to 120,725.60, 166,611.60 and 67,016.16 is: 92,488.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,725.60 : 166,611.60 = 67,016.16 : x
  2. Step 2: Convert to fraction form
    120,725.60/166,611.60 = 67,016.16/x
  3. Step 3: Cross multiply
    120,725.60x = 166,611.60 × 67,016.16
  4. Step 4: Simplify right side
    120,725.60x = 11,165,669,643.46
  5. Step 5: Solve for x
    x = 11,165,669,643.46/120,725.60
  6. Step 6: Final answer
    x = 92,488.00

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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.