Home / 199,900.44-275,836.05-128,377.35

Finding the Fourth Proportional to 199,900.44, 275,836.05 and 128,377.35

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Solution

The fourth proportional to 199,900.44, 275,836.05 and 128,377.35 is: 177,143.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,900.44 : 275,836.05 = 128,377.35 : x
  2. Step 2: Convert to fraction form
    199,900.44/275,836.05 = 128,377.35/x
  3. Step 3: Cross multiply
    199,900.44x = 275,836.05 × 128,377.35
  4. Step 4: Simplify right side
    199,900.44x = 35,411,101,133.47
  5. Step 5: Solve for x
    x = 35,411,101,133.47/199,900.44
  6. Step 6: Final answer
    x = 177,143.69

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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.