Home / 138,918.96-208,379.46-39,089.25

Finding the Fourth Proportional to 138,918.96, 208,379.46 and 39,089.25

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Solution

The fourth proportional to 138,918.96, 208,379.46 and 39,089.25 is: 58,634.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,918.96 : 208,379.46 = 39,089.25 : x
  2. Step 2: Convert to fraction form
    138,918.96/208,379.46 = 39,089.25/x
  3. Step 3: Cross multiply
    138,918.96x = 208,379.46 × 39,089.25
  4. Step 4: Simplify right side
    138,918.96x = 8,145,396,806.81
  5. Step 5: Solve for x
    x = 8,145,396,806.81/138,918.96
  6. Step 6: Final answer
    x = 58,634.16

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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.