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Finding the Fourth Proportional to 202,451.94, 279,371.43 and 121,905.54

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Solution

The fourth proportional to 202,451.94, 279,371.43 and 121,905.54 is: 168,222.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,451.94 : 279,371.43 = 121,905.54 : x
  2. Step 2: Convert to fraction form
    202,451.94/279,371.43 = 121,905.54/x
  3. Step 3: Cross multiply
    202,451.94x = 279,371.43 × 121,905.54
  4. Step 4: Simplify right side
    202,451.94x = 34,056,925,034.72
  5. Step 5: Solve for x
    x = 34,056,925,034.72/202,451.94
  6. Step 6: Final answer
    x = 168,222.27

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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.