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Finding the Fourth Proportional to 143,797.41, 215,723.79 and 64,911.65

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Solution

The fourth proportional to 143,797.41, 215,723.79 and 64,911.65 is: 97,379.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,797.41 : 215,723.79 = 64,911.65 : x
  2. Step 2: Convert to fraction form
    143,797.41/215,723.79 = 64,911.65/x
  3. Step 3: Cross multiply
    143,797.41x = 215,723.79 × 64,911.65
  4. Step 4: Simplify right side
    143,797.41x = 14,002,986,074.53
  5. Step 5: Solve for x
    x = 14,002,986,074.53/143,797.41
  6. Step 6: Final answer
    x = 97,379.96

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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.