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Finding the Fourth Proportional to 202,245.96, 279,043.74 and 121,662.30

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Solution

The fourth proportional to 202,245.96, 279,043.74 and 121,662.30 is: 167,860.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,245.96 : 279,043.74 = 121,662.30 : x
  2. Step 2: Convert to fraction form
    202,245.96/279,043.74 = 121,662.30/x
  3. Step 3: Cross multiply
    202,245.96x = 279,043.74 × 121,662.30
  4. Step 4: Simplify right side
    202,245.96x = 33,949,103,209.00
  5. Step 5: Solve for x
    x = 33,949,103,209.00/202,245.96
  6. Step 6: Final answer
    x = 167,860.48

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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.