Home / 126,921.78-190,387.53-38,187.90

Finding the Fourth Proportional to 126,921.78, 190,387.53 and 38,187.90

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Solution

The fourth proportional to 126,921.78, 190,387.53 and 38,187.90 is: 57,283.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,921.78 : 190,387.53 = 38,187.90 : x
  2. Step 2: Convert to fraction form
    126,921.78/190,387.53 = 38,187.90/x
  3. Step 3: Cross multiply
    126,921.78x = 190,387.53 × 38,187.90
  4. Step 4: Simplify right side
    126,921.78x = 7,270,499,956.89
  5. Step 5: Solve for x
    x = 7,270,499,956.89/126,921.78
  6. Step 6: Final answer
    x = 57,283.31

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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.