Home / 199,921.12-275,903.22-115,036.36

Finding the Fourth Proportional to 199,921.12, 275,903.22 and 115,036.36

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Solution

The fourth proportional to 199,921.12, 275,903.22 and 115,036.36 is: 158,757.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,921.12 : 275,903.22 = 115,036.36 : x
  2. Step 2: Convert to fraction form
    199,921.12/275,903.22 = 115,036.36/x
  3. Step 3: Cross multiply
    199,921.12x = 275,903.22 × 115,036.36
  4. Step 4: Simplify right side
    199,921.12x = 31,738,902,141.08
  5. Step 5: Solve for x
    x = 31,738,902,141.08/199,921.12
  6. Step 6: Final answer
    x = 158,757.12

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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.