Home / 138,036.78-207,002.04-53,785.86

Finding the Fourth Proportional to 138,036.78, 207,002.04 and 53,785.86

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Solution

The fourth proportional to 138,036.78, 207,002.04 and 53,785.86 is: 80,658.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,036.78 : 207,002.04 = 53,785.86 : x
  2. Step 2: Convert to fraction form
    138,036.78/207,002.04 = 53,785.86/x
  3. Step 3: Cross multiply
    138,036.78x = 207,002.04 × 53,785.86
  4. Step 4: Simplify right side
    138,036.78x = 11,133,782,743.15
  5. Step 5: Solve for x
    x = 11,133,782,743.15/138,036.78
  6. Step 6: Final answer
    x = 80,658.09

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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.