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Finding the Fourth Proportional to 143,610.10, 215,415.15 and 54,817.90

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Solution

The fourth proportional to 143,610.10, 215,415.15 and 54,817.90 is: 82,226.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,610.10 : 215,415.15 = 54,817.90 : x
  2. Step 2: Convert to fraction form
    143,610.10/215,415.15 = 54,817.90/x
  3. Step 3: Cross multiply
    143,610.10x = 215,415.15 × 54,817.90
  4. Step 4: Simplify right side
    143,610.10x = 11,808,606,151.19
  5. Step 5: Solve for x
    x = 11,808,606,151.19/143,610.10
  6. Step 6: Final answer
    x = 82,226.85

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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.