Home / 138,728.07-208,087.25-38,887.47

Finding the Fourth Proportional to 138,728.07, 208,087.25 and 38,887.47

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Solution

The fourth proportional to 138,728.07, 208,087.25 and 38,887.47 is: 58,329.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,728.07 : 208,087.25 = 38,887.47 : x
  2. Step 2: Convert to fraction form
    138,728.07/208,087.25 = 38,887.47/x
  3. Step 3: Cross multiply
    138,728.07x = 208,087.25 × 38,887.47
  4. Step 4: Simplify right side
    138,728.07x = 8,091,986,497.32
  5. Step 5: Solve for x
    x = 8,091,986,497.32/138,728.07
  6. Step 6: Final answer
    x = 58,329.84

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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.