Home / 202,908.11-280,102.86-121,265.16

Finding the Fourth Proportional to 202,908.11, 280,102.86 and 121,265.16

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Solution

The fourth proportional to 202,908.11, 280,102.86 and 121,265.16 is: 167,399.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,908.11 : 280,102.86 = 121,265.16 : x
  2. Step 2: Convert to fraction form
    202,908.11/280,102.86 = 121,265.16/x
  3. Step 3: Cross multiply
    202,908.11x = 280,102.86 × 121,265.16
  4. Step 4: Simplify right side
    202,908.11x = 33,966,718,134.36
  5. Step 5: Solve for x
    x = 33,966,718,134.36/202,908.11
  6. Step 6: Final answer
    x = 167,399.51

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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.