Home / 209,873.46-289,601.01-128,160.66

Finding the Fourth Proportional to 209,873.46, 289,601.01 and 128,160.66

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Solution

The fourth proportional to 209,873.46, 289,601.01 and 128,160.66 is: 176,846.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,873.46 : 289,601.01 = 128,160.66 : x
  2. Step 2: Convert to fraction form
    209,873.46/289,601.01 = 128,160.66/x
  3. Step 3: Cross multiply
    209,873.46x = 289,601.01 × 128,160.66
  4. Step 4: Simplify right side
    209,873.46x = 37,115,456,578.27
  5. Step 5: Solve for x
    x = 37,115,456,578.27/209,873.46
  6. Step 6: Final answer
    x = 176,846.83

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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.