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Finding the Fourth Proportional to 143,563.74, 215,379.69 and 45,067.74

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Solution

The fourth proportional to 143,563.74, 215,379.69 and 45,067.74 is: 67,612.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,563.74 : 215,379.69 = 45,067.74 : x
  2. Step 2: Convert to fraction form
    143,563.74/215,379.69 = 45,067.74/x
  3. Step 3: Cross multiply
    143,563.74x = 215,379.69 × 45,067.74
  4. Step 4: Simplify right side
    143,563.74x = 9,706,675,870.20
  5. Step 5: Solve for x
    x = 9,706,675,870.20/143,563.74
  6. Step 6: Final answer
    x = 67,612.31

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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.