Home / 199,927.82-275,873.67-128,404.72

Finding the Fourth Proportional to 199,927.82, 275,873.67 and 128,404.72

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Solution

The fourth proportional to 199,927.82, 275,873.67 and 128,404.72 is: 177,181.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,927.82 : 275,873.67 = 128,404.72 : x
  2. Step 2: Convert to fraction form
    199,927.82/275,873.67 = 128,404.72/x
  3. Step 3: Cross multiply
    199,927.82x = 275,873.67 × 128,404.72
  4. Step 4: Simplify right side
    199,927.82x = 35,423,479,972.35
  5. Step 5: Solve for x
    x = 35,423,479,972.35/199,927.82
  6. Step 6: Final answer
    x = 177,181.34

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1.5x scale

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.