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Finding the Fourth Proportional to 202,286.60, 279,097.96 and 121,673.80

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Solution

The fourth proportional to 202,286.60, 279,097.96 and 121,673.80 is: 167,875.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,286.60 : 279,097.96 = 121,673.80 : x
  2. Step 2: Convert to fraction form
    202,286.60/279,097.96 = 121,673.80/x
  3. Step 3: Cross multiply
    202,286.60x = 279,097.96 × 121,673.80
  4. Step 4: Simplify right side
    202,286.60x = 33,958,909,365.45
  5. Step 5: Solve for x
    x = 33,958,909,365.45/202,286.60
  6. Step 6: Final answer
    x = 167,875.23

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1.5x scale

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.