Home / 143,625.87-215,327.79-72,511.90

Finding the Fourth Proportional to 143,625.87, 215,327.79 and 72,511.90

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Solution

The fourth proportional to 143,625.87, 215,327.79 and 72,511.90 is: 108,711.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,625.87 : 215,327.79 = 72,511.90 : x
  2. Step 2: Convert to fraction form
    143,625.87/215,327.79 = 72,511.90/x
  3. Step 3: Cross multiply
    143,625.87x = 215,327.79 × 72,511.90
  4. Step 4: Simplify right side
    143,625.87x = 15,613,827,175.70
  5. Step 5: Solve for x
    x = 15,613,827,175.70/143,625.87
  6. Step 6: Final answer
    x = 108,711.80

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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.