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Finding the Fourth Proportional to 157,791.51, 217,608.03 and 123,340.79

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Solution

The fourth proportional to 157,791.51, 217,608.03 and 123,340.79 is: 170,097.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,791.51 : 217,608.03 = 123,340.79 : x
  2. Step 2: Convert to fraction form
    157,791.51/217,608.03 = 123,340.79/x
  3. Step 3: Cross multiply
    157,791.51x = 217,608.03 × 123,340.79
  4. Step 4: Simplify right side
    157,791.51x = 26,839,946,874.56
  5. Step 5: Solve for x
    x = 26,839,946,874.56/157,791.51
  6. Step 6: Final answer
    x = 170,097.53

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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.