Home / 79,015.26-109,129.09-73,036.55

Finding the Fourth Proportional to 79,015.26, 109,129.09 and 73,036.55

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Solution

The fourth proportional to 79,015.26, 109,129.09 and 73,036.55 is: 100,871.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,015.26 : 109,129.09 = 73,036.55 : x
  2. Step 2: Convert to fraction form
    79,015.26/109,129.09 = 73,036.55/x
  3. Step 3: Cross multiply
    79,015.26x = 109,129.09 × 73,036.55
  4. Step 4: Simplify right side
    79,015.26x = 7,970,412,238.24
  5. Step 5: Solve for x
    x = 7,970,412,238.24/79,015.26
  6. Step 6: Final answer
    x = 100,871.81

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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.