Home / 138,860.91-208,299.14-39,013.31

Finding the Fourth Proportional to 138,860.91, 208,299.14 and 39,013.31

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Solution

The fourth proportional to 138,860.91, 208,299.14 and 39,013.31 is: 58,522.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,860.91 : 208,299.14 = 39,013.31 : x
  2. Step 2: Convert to fraction form
    138,860.91/208,299.14 = 39,013.31/x
  3. Step 3: Cross multiply
    138,860.91x = 208,299.14 × 39,013.31
  4. Step 4: Simplify right side
    138,860.91x = 8,126,439,448.40
  5. Step 5: Solve for x
    x = 8,126,439,448.40/138,860.91
  6. Step 6: Final answer
    x = 58,522.15

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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.