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Finding the Fourth Proportional to 137,449.60, 206,145.60 and 67,379.20

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Solution

The fourth proportional to 137,449.60, 206,145.60 and 67,379.20 is: 101,054.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,449.60 : 206,145.60 = 67,379.20 : x
  2. Step 2: Convert to fraction form
    137,449.60/206,145.60 = 67,379.20/x
  3. Step 3: Cross multiply
    137,449.60x = 206,145.60 × 67,379.20
  4. Step 4: Simplify right side
    137,449.60x = 13,889,925,611.52
  5. Step 5: Solve for x
    x = 13,889,925,611.52/137,449.60
  6. Step 6: Final answer
    x = 101,054.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.