Home / 138,311.40-207,467.10-68,181.60

Finding the Fourth Proportional to 138,311.40, 207,467.10 and 68,181.60

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Solution

The fourth proportional to 138,311.40, 207,467.10 and 68,181.60 is: 102,272.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,311.40 : 207,467.10 = 68,181.60 : x
  2. Step 2: Convert to fraction form
    138,311.40/207,467.10 = 68,181.60/x
  3. Step 3: Cross multiply
    138,311.40x = 207,467.10 × 68,181.60
  4. Step 4: Simplify right side
    138,311.40x = 14,145,438,825.36
  5. Step 5: Solve for x
    x = 14,145,438,825.36/138,311.40
  6. Step 6: Final answer
    x = 102,272.40

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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.