Home / 278,134.56-417,259.92-91,131.36

Finding the Fourth Proportional to 278,134.56, 417,259.92 and 91,131.36

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Solution

The fourth proportional to 278,134.56, 417,259.92 and 91,131.36 is: 136,716.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,134.56 : 417,259.92 = 91,131.36 : x
  2. Step 2: Convert to fraction form
    278,134.56/417,259.92 = 91,131.36/x
  3. Step 3: Cross multiply
    278,134.56x = 417,259.92 × 91,131.36
  4. Step 4: Simplify right side
    278,134.56x = 38,025,463,983.09
  5. Step 5: Solve for x
    x = 38,025,463,983.09/278,134.56
  6. Step 6: Final answer
    x = 136,716.07

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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.