Home / 138,760.19-208,203.86-75,485.52

Finding the Fourth Proportional to 138,760.19, 208,203.86 and 75,485.52

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Solution

The fourth proportional to 138,760.19, 208,203.86 and 75,485.52 is: 113,262.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,760.19 : 208,203.86 = 75,485.52 : x
  2. Step 2: Convert to fraction form
    138,760.19/208,203.86 = 75,485.52/x
  3. Step 3: Cross multiply
    138,760.19x = 208,203.86 × 75,485.52
  4. Step 4: Simplify right side
    138,760.19x = 15,716,375,597.09
  5. Step 5: Solve for x
    x = 15,716,375,597.09/138,760.19
  6. Step 6: Final answer
    x = 113,262.86

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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.