Home / 138,621.86-207,900.95-38,789.13

Finding the Fourth Proportional to 138,621.86, 207,900.95 and 38,789.13

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Solution

The fourth proportional to 138,621.86, 207,900.95 and 38,789.13 is: 58,174.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,621.86 : 207,900.95 = 38,789.13 : x
  2. Step 2: Convert to fraction form
    138,621.86/207,900.95 = 38,789.13/x
  3. Step 3: Cross multiply
    138,621.86x = 207,900.95 × 38,789.13
  4. Step 4: Simplify right side
    138,621.86x = 8,064,296,782.73
  5. Step 5: Solve for x
    x = 8,064,296,782.73/138,621.86
  6. Step 6: Final answer
    x = 58,174.79

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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.