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Finding the Fourth Proportional to 121,797.24, 168,107.31 and 74,040.48

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Solution

The fourth proportional to 121,797.24, 168,107.31 and 74,040.48 is: 102,192.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,797.24 : 168,107.31 = 74,040.48 : x
  2. Step 2: Convert to fraction form
    121,797.24/168,107.31 = 74,040.48/x
  3. Step 3: Cross multiply
    121,797.24x = 168,107.31 × 74,040.48
  4. Step 4: Simplify right side
    121,797.24x = 12,446,745,923.91
  5. Step 5: Solve for x
    x = 12,446,745,923.91/121,797.24
  6. Step 6: Final answer
    x = 102,192.35

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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.