Home / 201,581.64-278,089.56-129,984.60

Finding the Fourth Proportional to 201,581.64, 278,089.56 and 129,984.60

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Solution

The fourth proportional to 201,581.64, 278,089.56 and 129,984.60 is: 179,318.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,581.64 : 278,089.56 = 129,984.60 : x
  2. Step 2: Convert to fraction form
    201,581.64/278,089.56 = 129,984.60/x
  3. Step 3: Cross multiply
    201,581.64x = 278,089.56 × 129,984.60
  4. Step 4: Simplify right side
    201,581.64x = 36,147,360,220.78
  5. Step 5: Solve for x
    x = 36,147,360,220.78/201,581.64
  6. Step 6: Final answer
    x = 179,318.71

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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.