Home / 103,009.72-142,150.09-57,067.47

Finding the Fourth Proportional to 103,009.72, 142,150.09 and 57,067.47

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Solution

The fourth proportional to 103,009.72, 142,150.09 and 57,067.47 is: 78,751.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,009.72 : 142,150.09 = 57,067.47 : x
  2. Step 2: Convert to fraction form
    103,009.72/142,150.09 = 57,067.47/x
  3. Step 3: Cross multiply
    103,009.72x = 142,150.09 × 57,067.47
  4. Step 4: Simplify right side
    103,009.72x = 8,112,145,739.44
  5. Step 5: Solve for x
    x = 8,112,145,739.44/103,009.72
  6. Step 6: Final answer
    x = 78,751.27

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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.