Home / 138,299.00-207,448.70-38,459.21

Finding the Fourth Proportional to 138,299.00, 207,448.70 and 38,459.21

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Solution

The fourth proportional to 138,299.00, 207,448.70 and 38,459.21 is: 57,688.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,299.00 : 207,448.70 = 38,459.21 : x
  2. Step 2: Convert to fraction form
    138,299.00/207,448.70 = 38,459.21/x
  3. Step 3: Cross multiply
    138,299.00x = 207,448.70 × 38,459.21
  4. Step 4: Simplify right side
    138,299.00x = 7,978,311,887.99
  5. Step 5: Solve for x
    x = 7,978,311,887.99/138,299.00
  6. Step 6: Final answer
    x = 57,688.86

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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.