Home / 154,390.62-213,068.44-86,406.20

Finding the Fourth Proportional to 154,390.62, 213,068.44 and 86,406.20

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Solution

The fourth proportional to 154,390.62, 213,068.44 and 86,406.20 is: 119,245.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,390.62 : 213,068.44 = 86,406.20 : x
  2. Step 2: Convert to fraction form
    154,390.62/213,068.44 = 86,406.20/x
  3. Step 3: Cross multiply
    154,390.62x = 213,068.44 × 86,406.20
  4. Step 4: Simplify right side
    154,390.62x = 18,410,434,240.33
  5. Step 5: Solve for x
    x = 18,410,434,240.33/154,390.62
  6. Step 6: Final answer
    x = 119,245.81

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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.