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Finding the Fourth Proportional to 121,410.51, 167,561.65 and 69,743.75

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Solution

The fourth proportional to 121,410.51, 167,561.65 and 69,743.75 is: 96,255.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,410.51 : 167,561.65 = 69,743.75 : x
  2. Step 2: Convert to fraction form
    121,410.51/167,561.65 = 69,743.75/x
  3. Step 3: Cross multiply
    121,410.51x = 167,561.65 × 69,743.75
  4. Step 4: Simplify right side
    121,410.51x = 11,686,377,076.56
  5. Step 5: Solve for x
    x = 11,686,377,076.56/121,410.51
  6. Step 6: Final answer
    x = 96,255.07

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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.