Home / 209,040.56-288,595.67-137,628.19

Finding the Fourth Proportional to 209,040.56, 288,595.67 and 137,628.19

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Solution

The fourth proportional to 209,040.56, 288,595.67 and 137,628.19 is: 190,005.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,040.56 : 288,595.67 = 137,628.19 : x
  2. Step 2: Convert to fraction form
    209,040.56/288,595.67 = 137,628.19/x
  3. Step 3: Cross multiply
    209,040.56x = 288,595.67 × 137,628.19
  4. Step 4: Simplify right side
    209,040.56x = 39,718,899,703.94
  5. Step 5: Solve for x
    x = 39,718,899,703.94/209,040.56
  6. Step 6: Final answer
    x = 190,005.71

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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.