Home / 138,918.07-208,352.83-39,054.54

Finding the Fourth Proportional to 138,918.07, 208,352.83 and 39,054.54

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Solution

The fourth proportional to 138,918.07, 208,352.83 and 39,054.54 is: 58,574.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,918.07 : 208,352.83 = 39,054.54 : x
  2. Step 2: Convert to fraction form
    138,918.07/208,352.83 = 39,054.54/x
  3. Step 3: Cross multiply
    138,918.07x = 208,352.83 × 39,054.54
  4. Step 4: Simplify right side
    138,918.07x = 8,137,123,933.35
  5. Step 5: Solve for x
    x = 8,137,123,933.35/138,918.07
  6. Step 6: Final answer
    x = 58,574.99

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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.