Home / 135,789.77-203,684.66-72,417.90

Finding the Fourth Proportional to 135,789.77, 203,684.66 and 72,417.90

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Solution

The fourth proportional to 135,789.77, 203,684.66 and 72,417.90 is: 108,626.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,789.77 : 203,684.66 = 72,417.90 : x
  2. Step 2: Convert to fraction form
    135,789.77/203,684.66 = 72,417.90/x
  3. Step 3: Cross multiply
    135,789.77x = 203,684.66 × 72,417.90
  4. Step 4: Simplify right side
    135,789.77x = 14,750,414,977.32
  5. Step 5: Solve for x
    x = 14,750,414,977.32/135,789.77
  6. Step 6: Final answer
    x = 108,626.85

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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.