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Finding the Fourth Proportional to 202,694.76, 279,728.10 and 122,148.36

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Solution

The fourth proportional to 202,694.76, 279,728.10 and 122,148.36 is: 168,570.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,694.76 : 279,728.10 = 122,148.36 : x
  2. Step 2: Convert to fraction form
    202,694.76/279,728.10 = 122,148.36/x
  3. Step 3: Cross multiply
    202,694.76x = 279,728.10 × 122,148.36
  4. Step 4: Simplify right side
    202,694.76x = 34,168,328,660.92
  5. Step 5: Solve for x
    x = 34,168,328,660.92/202,694.76
  6. Step 6: Final answer
    x = 168,570.36

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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.