Home / 138,917.20-208,376.83-39,087.49

Finding the Fourth Proportional to 138,917.20, 208,376.83 and 39,087.49

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Solution

The fourth proportional to 138,917.20, 208,376.83 and 39,087.49 is: 58,631.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,917.20 : 208,376.83 = 39,087.49 : x
  2. Step 2: Convert to fraction form
    138,917.20/208,376.83 = 39,087.49/x
  3. Step 3: Cross multiply
    138,917.20x = 208,376.83 × 39,087.49
  4. Step 4: Simplify right side
    138,917.20x = 8,144,926,216.97
  5. Step 5: Solve for x
    x = 8,144,926,216.97/138,917.20
  6. Step 6: Final answer
    x = 58,631.52

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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.