Home / 154,919.40-213,771.20-86,922.20

Finding the Fourth Proportional to 154,919.40, 213,771.20 and 86,922.20

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Solution

The fourth proportional to 154,919.40, 213,771.20 and 86,922.20 is: 119,942.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,919.40 : 213,771.20 = 86,922.20 : x
  2. Step 2: Convert to fraction form
    154,919.40/213,771.20 = 86,922.20/x
  3. Step 3: Cross multiply
    154,919.40x = 213,771.20 × 86,922.20
  4. Step 4: Simplify right side
    154,919.40x = 18,581,461,497.17
  5. Step 5: Solve for x
    x = 18,581,461,497.17/154,919.40
  6. Step 6: Final answer
    x = 119,942.77

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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.