Home / 154,389.62-213,067.06-86,405.20

Finding the Fourth Proportional to 154,389.62, 213,067.06 and 86,405.20

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Solution

The fourth proportional to 154,389.62, 213,067.06 and 86,405.20 is: 119,244.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,389.62 : 213,067.06 = 86,405.20 : x
  2. Step 2: Convert to fraction form
    154,389.62/213,067.06 = 86,405.20/x
  3. Step 3: Cross multiply
    154,389.62x = 213,067.06 × 86,405.20
  4. Step 4: Simplify right side
    154,389.62x = 18,410,101,932.71
  5. Step 5: Solve for x
    x = 18,410,101,932.71/154,389.62
  6. Step 6: Final answer
    x = 119,244.43

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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.