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Finding the Fourth Proportional to 202,969.65, 280,091.21 and 112,329.44

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Solution

The fourth proportional to 202,969.65, 280,091.21 and 112,329.44 is: 155,010.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,969.65 : 280,091.21 = 112,329.44 : x
  2. Step 2: Convert to fraction form
    202,969.65/280,091.21 = 112,329.44/x
  3. Step 3: Cross multiply
    202,969.65x = 280,091.21 × 112,329.44
  4. Step 4: Simplify right side
    202,969.65x = 31,462,486,806.12
  5. Step 5: Solve for x
    x = 31,462,486,806.12/202,969.65
  6. Step 6: Final answer
    x = 155,010.79

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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.