Home / 199,914.24-275,855-128,391.14

Finding the Fourth Proportional to 199,914.24, 275,855 and 128,391.14

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Solution

The fourth proportional to 199,914.24, 275,855 and 128,391.14 is: 177,162.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,914.24 : 275,855 = 128,391.14 : x
  2. Step 2: Convert to fraction form
    199,914.24/275,855 = 128,391.14/x
  3. Step 3: Cross multiply
    199,914.24x = 275,855 × 128,391.14
  4. Step 4: Simplify right side
    199,914.24x = 35,417,337,924.70
  5. Step 5: Solve for x
    x = 35,417,337,924.70/199,914.24
  6. Step 6: Final answer
    x = 177,162.66

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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.