Home / 209,769.09-289,502.24-128,092.83

Finding the Fourth Proportional to 209,769.09, 289,502.24 and 128,092.83

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Solution

The fourth proportional to 209,769.09, 289,502.24 and 128,092.83 is: 176,780.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,769.09 : 289,502.24 = 128,092.83 : x
  2. Step 2: Convert to fraction form
    209,769.09/289,502.24 = 128,092.83/x
  3. Step 3: Cross multiply
    209,769.09x = 289,502.24 × 128,092.83
  4. Step 4: Simplify right side
    209,769.09x = 37,083,161,212.94
  5. Step 5: Solve for x
    x = 37,083,161,212.94/209,769.09
  6. Step 6: Final answer
    x = 176,780.87

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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.