Home / 215,923.05-323,856.23-66,178.35

Finding the Fourth Proportional to 215,923.05, 323,856.23 and 66,178.35

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Solution

The fourth proportional to 215,923.05, 323,856.23 and 66,178.35 is: 99,258.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,923.05 : 323,856.23 = 66,178.35 : x
  2. Step 2: Convert to fraction form
    215,923.05/323,856.23 = 66,178.35/x
  3. Step 3: Cross multiply
    215,923.05x = 323,856.23 × 66,178.35
  4. Step 4: Simplify right side
    215,923.05x = 21,432,270,607.73
  5. Step 5: Solve for x
    x = 21,432,270,607.73/215,923.05
  6. Step 6: Final answer
    x = 99,258.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.