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Finding the Fourth Proportional to 199,873.13, 275,798.39 and 128,350.13

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Solution

The fourth proportional to 199,873.13, 275,798.39 and 128,350.13 is: 177,106.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,873.13 : 275,798.39 = 128,350.13 : x
  2. Step 2: Convert to fraction form
    199,873.13/275,798.39 = 128,350.13/x
  3. Step 3: Cross multiply
    199,873.13x = 275,798.39 × 128,350.13
  4. Step 4: Simplify right side
    199,873.13x = 35,398,757,189.55
  5. Step 5: Solve for x
    x = 35,398,757,189.55/199,873.13
  6. Step 6: Final answer
    x = 177,106.14

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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.