Home / 154,641.29-213,404.83-86,658.80

Finding the Fourth Proportional to 154,641.29, 213,404.83 and 86,658.80

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Solution

The fourth proportional to 154,641.29, 213,404.83 and 86,658.80 is: 119,589.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,641.29 : 213,404.83 = 86,658.80 : x
  2. Step 2: Convert to fraction form
    154,641.29/213,404.83 = 86,658.80/x
  3. Step 3: Cross multiply
    154,641.29x = 213,404.83 × 86,658.80
  4. Step 4: Simplify right side
    154,641.29x = 18,493,405,198.33
  5. Step 5: Solve for x
    x = 18,493,405,198.33/154,641.29
  6. Step 6: Final answer
    x = 119,589.06

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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.