Home / 136,187.68-203,917.68-79,981.60

Finding the Fourth Proportional to 136,187.68, 203,917.68 and 79,981.60

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Solution

The fourth proportional to 136,187.68, 203,917.68 and 79,981.60 is: 119,758.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,187.68 : 203,917.68 = 79,981.60 : x
  2. Step 2: Convert to fraction form
    136,187.68/203,917.68 = 79,981.60/x
  3. Step 3: Cross multiply
    136,187.68x = 203,917.68 × 79,981.60
  4. Step 4: Simplify right side
    136,187.68x = 16,309,662,314.69
  5. Step 5: Solve for x
    x = 16,309,662,314.69/136,187.68
  6. Step 6: Final answer
    x = 119,758.72

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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.