Home / 123,851.79-170,917.47-70,135.38

Finding the Fourth Proportional to 123,851.79, 170,917.47 and 70,135.38

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Solution

The fourth proportional to 123,851.79, 170,917.47 and 70,135.38 is: 96,787.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,851.79 : 170,917.47 = 70,135.38 : x
  2. Step 2: Convert to fraction form
    123,851.79/170,917.47 = 70,135.38/x
  3. Step 3: Cross multiply
    123,851.79x = 170,917.47 × 70,135.38
  4. Step 4: Simplify right side
    123,851.79x = 11,987,361,707.09
  5. Step 5: Solve for x
    x = 11,987,361,707.09/123,851.79
  6. Step 6: Final answer
    x = 96,787.96

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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.