Home / 201,930.77-278,677.61-115,917.60

Finding the Fourth Proportional to 201,930.77, 278,677.61 and 115,917.60

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Solution

The fourth proportional to 201,930.77, 278,677.61 and 115,917.60 is: 159,973.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,930.77 : 278,677.61 = 115,917.60 : x
  2. Step 2: Convert to fraction form
    201,930.77/278,677.61 = 115,917.60/x
  3. Step 3: Cross multiply
    201,930.77x = 278,677.61 × 115,917.60
  4. Step 4: Simplify right side
    201,930.77x = 32,303,639,724.94
  5. Step 5: Solve for x
    x = 32,303,639,724.94/201,930.77
  6. Step 6: Final answer
    x = 159,973.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.