Home / 138,590.44-208,002.51-54,409.73

Finding the Fourth Proportional to 138,590.44, 208,002.51 and 54,409.73

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Solution

The fourth proportional to 138,590.44, 208,002.51 and 54,409.73 is: 81,660.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,590.44 : 208,002.51 = 54,409.73 : x
  2. Step 2: Convert to fraction form
    138,590.44/208,002.51 = 54,409.73/x
  3. Step 3: Cross multiply
    138,590.44x = 208,002.51 × 54,409.73
  4. Step 4: Simplify right side
    138,590.44x = 11,317,359,215.38
  5. Step 5: Solve for x
    x = 11,317,359,215.38/138,590.44
  6. Step 6: Final answer
    x = 81,660.46

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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.