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Finding the Fourth Proportional to 143,900.30, 215,850.45 and 45,404.30

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Solution

The fourth proportional to 143,900.30, 215,850.45 and 45,404.30 is: 68,106.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,900.30 : 215,850.45 = 45,404.30 : x
  2. Step 2: Convert to fraction form
    143,900.30/215,850.45 = 45,404.30/x
  3. Step 3: Cross multiply
    143,900.30x = 215,850.45 × 45,404.30
  4. Step 4: Simplify right side
    143,900.30x = 9,800,538,586.94
  5. Step 5: Solve for x
    x = 9,800,538,586.94/143,900.30
  6. Step 6: Final answer
    x = 68,106.45

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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.