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Finding the Fourth Proportional to 143,923, 215,885.88 and 55,155.40

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Solution

The fourth proportional to 143,923, 215,885.88 and 55,155.40 is: 82,733.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,923 : 215,885.88 = 55,155.40 : x
  2. Step 2: Convert to fraction form
    143,923/215,885.88 = 55,155.40/x
  3. Step 3: Cross multiply
    143,923x = 215,885.88 × 55,155.40
  4. Step 4: Simplify right side
    143,923x = 11,907,272,065.75
  5. Step 5: Solve for x
    x = 11,907,272,065.75/143,923
  6. Step 6: Final answer
    x = 82,733.63

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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.