Home / 138,163.26-190,661.18-83,747.64

Finding the Fourth Proportional to 138,163.26, 190,661.18 and 83,747.64

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Solution

The fourth proportional to 138,163.26, 190,661.18 and 83,747.64 is: 115,569.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,163.26 : 190,661.18 = 83,747.64 : x
  2. Step 2: Convert to fraction form
    138,163.26/190,661.18 = 83,747.64/x
  3. Step 3: Cross multiply
    138,163.26x = 190,661.18 × 83,747.64
  4. Step 4: Simplify right side
    138,163.26x = 15,967,423,864.62
  5. Step 5: Solve for x
    x = 15,967,423,864.62/138,163.26
  6. Step 6: Final answer
    x = 115,569.25

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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.