Home / 199,396.11-275,011.05-127,782.78

Finding the Fourth Proportional to 199,396.11, 275,011.05 and 127,782.78

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Solution

The fourth proportional to 199,396.11, 275,011.05 and 127,782.78 is: 176,240.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,396.11 : 275,011.05 = 127,782.78 : x
  2. Step 2: Convert to fraction form
    199,396.11/275,011.05 = 127,782.78/x
  3. Step 3: Cross multiply
    199,396.11x = 275,011.05 × 127,782.78
  4. Step 4: Simplify right side
    199,396.11x = 35,141,676,499.72
  5. Step 5: Solve for x
    x = 35,141,676,499.72/199,396.11
  6. Step 6: Final answer
    x = 176,240.53

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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.