Home / 278,140.56-417,268.92-91,137.36

Finding the Fourth Proportional to 278,140.56, 417,268.92 and 91,137.36

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Solution

The fourth proportional to 278,140.56, 417,268.92 and 91,137.36 is: 136,725.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,140.56 : 417,268.92 = 91,137.36 : x
  2. Step 2: Convert to fraction form
    278,140.56/417,268.92 = 91,137.36/x
  3. Step 3: Cross multiply
    278,140.56x = 417,268.92 × 91,137.36
  4. Step 4: Simplify right side
    278,140.56x = 38,028,787,778.85
  5. Step 5: Solve for x
    x = 38,028,787,778.85/278,140.56
  6. Step 6: Final answer
    x = 136,725.07

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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.