Home / 138,610.08-207,893.52-45,115.20

Finding the Fourth Proportional to 138,610.08, 207,893.52 and 45,115.20

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Solution

The fourth proportional to 138,610.08, 207,893.52 and 45,115.20 is: 67,665.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,610.08 : 207,893.52 = 45,115.20 : x
  2. Step 2: Convert to fraction form
    138,610.08/207,893.52 = 45,115.20/x
  3. Step 3: Cross multiply
    138,610.08x = 207,893.52 × 45,115.20
  4. Step 4: Simplify right side
    138,610.08x = 9,379,157,733.50
  5. Step 5: Solve for x
    x = 9,379,157,733.50/138,610.08
  6. Step 6: Final answer
    x = 67,665.77

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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.