Home / 135,237.20-203,028.60-72,107.60

Finding the Fourth Proportional to 135,237.20, 203,028.60 and 72,107.60

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Solution

The fourth proportional to 135,237.20, 203,028.60 and 72,107.60 is: 108,253.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,237.20 : 203,028.60 = 72,107.60 : x
  2. Step 2: Convert to fraction form
    135,237.20/203,028.60 = 72,107.60/x
  3. Step 3: Cross multiply
    135,237.20x = 203,028.60 × 72,107.60
  4. Step 4: Simplify right side
    135,237.20x = 14,639,905,077.36
  5. Step 5: Solve for x
    x = 14,639,905,077.36/135,237.20
  6. Step 6: Final answer
    x = 108,253.54

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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.