Home / 138,874.77-208,321.94-68,735.25

Finding the Fourth Proportional to 138,874.77, 208,321.94 and 68,735.25

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Solution

The fourth proportional to 138,874.77, 208,321.94 and 68,735.25 is: 103,107.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,874.77 : 208,321.94 = 68,735.25 : x
  2. Step 2: Convert to fraction form
    138,874.77/208,321.94 = 68,735.25/x
  3. Step 3: Cross multiply
    138,874.77x = 208,321.94 × 68,735.25
  4. Step 4: Simplify right side
    138,874.77x = 14,319,060,798.22
  5. Step 5: Solve for x
    x = 14,319,060,798.22/138,874.77
  6. Step 6: Final answer
    x = 103,107.72

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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.