Home / 199,920.12-275,901.84-115,035.36

Finding the Fourth Proportional to 199,920.12, 275,901.84 and 115,035.36

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Solution

The fourth proportional to 199,920.12, 275,901.84 and 115,035.36 is: 158,755.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,920.12 : 275,901.84 = 115,035.36 : x
  2. Step 2: Convert to fraction form
    199,920.12/275,901.84 = 115,035.36/x
  3. Step 3: Cross multiply
    199,920.12x = 275,901.84 × 115,035.36
  4. Step 4: Simplify right side
    199,920.12x = 31,738,467,489.06
  5. Step 5: Solve for x
    x = 31,738,467,489.06/199,920.12
  6. Step 6: Final answer
    x = 158,755.74

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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.