Home / 105,121.33-145,067.55-57,374.66

Finding the Fourth Proportional to 105,121.33, 145,067.55 and 57,374.66

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Solution

The fourth proportional to 105,121.33, 145,067.55 and 57,374.66 is: 79,177.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,121.33 : 145,067.55 = 57,374.66 : x
  2. Step 2: Convert to fraction form
    105,121.33/145,067.55 = 57,374.66/x
  3. Step 3: Cross multiply
    105,121.33x = 145,067.55 × 57,374.66
  4. Step 4: Simplify right side
    105,121.33x = 8,323,201,358.28
  5. Step 5: Solve for x
    x = 8,323,201,358.28/105,121.33
  6. Step 6: Final answer
    x = 79,177.09

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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.