Home / 202,127.85-278,935.97-121,602.11

Finding the Fourth Proportional to 202,127.85, 278,935.97 and 121,602.11

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Solution

The fourth proportional to 202,127.85, 278,935.97 and 121,602.11 is: 167,810.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,127.85 : 278,935.97 = 121,602.11 : x
  2. Step 2: Convert to fraction form
    202,127.85/278,935.97 = 121,602.11/x
  3. Step 3: Cross multiply
    202,127.85x = 278,935.97 × 121,602.11
  4. Step 4: Simplify right side
    202,127.85x = 33,919,200,504.21
  5. Step 5: Solve for x
    x = 33,919,200,504.21/202,127.85
  6. Step 6: Final answer
    x = 167,810.62

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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.