Home / 138,099.03-190,548.09-80,727.27

Finding the Fourth Proportional to 138,099.03, 190,548.09 and 80,727.27

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Solution

The fourth proportional to 138,099.03, 190,548.09 and 80,727.27 is: 111,386.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,099.03 : 190,548.09 = 80,727.27 : x
  2. Step 2: Convert to fraction form
    138,099.03/190,548.09 = 80,727.27/x
  3. Step 3: Cross multiply
    138,099.03x = 190,548.09 × 80,727.27
  4. Step 4: Simplify right side
    138,099.03x = 15,382,427,109.41
  5. Step 5: Solve for x
    x = 15,382,427,109.41/138,099.03
  6. Step 6: Final answer
    x = 111,386.93

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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.