Home / 126,972.39-190,695.62-111,780.33

Finding the Fourth Proportional to 126,972.39, 190,695.62 and 111,780.33

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Solution

The fourth proportional to 126,972.39, 190,695.62 and 111,780.33 is: 167,879.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,972.39 : 190,695.62 = 111,780.33 : x
  2. Step 2: Convert to fraction form
    126,972.39/190,695.62 = 111,780.33/x
  3. Step 3: Cross multiply
    126,972.39x = 190,695.62 × 111,780.33
  4. Step 4: Simplify right side
    126,972.39x = 21,316,018,805.06
  5. Step 5: Solve for x
    x = 21,316,018,805.06/126,972.39
  6. Step 6: Final answer
    x = 167,879.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.