Home / 201,979.50-278,730.21-111,335.55

Finding the Fourth Proportional to 201,979.50, 278,730.21 and 111,335.55

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Solution

The fourth proportional to 201,979.50, 278,730.21 and 111,335.55 is: 153,642.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,979.50 : 278,730.21 = 111,335.55 : x
  2. Step 2: Convert to fraction form
    201,979.50/278,730.21 = 111,335.55/x
  3. Step 3: Cross multiply
    201,979.50x = 278,730.21 × 111,335.55
  4. Step 4: Simplify right side
    201,979.50x = 31,032,581,231.97
  5. Step 5: Solve for x
    x = 31,032,581,231.97/201,979.50
  6. Step 6: Final answer
    x = 153,642.23

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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.