Home / 138,631.55-207,983.77-54,396.81

Finding the Fourth Proportional to 138,631.55, 207,983.77 and 54,396.81

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Solution

The fourth proportional to 138,631.55, 207,983.77 and 54,396.81 is: 81,609.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,631.55 : 207,983.77 = 54,396.81 : x
  2. Step 2: Convert to fraction form
    138,631.55/207,983.77 = 54,396.81/x
  3. Step 3: Cross multiply
    138,631.55x = 207,983.77 × 54,396.81
  4. Step 4: Simplify right side
    138,631.55x = 11,313,653,483.78
  5. Step 5: Solve for x
    x = 11,313,653,483.78/138,631.55
  6. Step 6: Final answer
    x = 81,609.52

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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.