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Finding the Fourth Proportional to 143,298.27, 214,619.58 and 68,471.01

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Solution

The fourth proportional to 143,298.27, 214,619.58 and 68,471.01 is: 102,549.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,298.27 : 214,619.58 = 68,471.01 : x
  2. Step 2: Convert to fraction form
    143,298.27/214,619.58 = 68,471.01/x
  3. Step 3: Cross multiply
    143,298.27x = 214,619.58 × 68,471.01
  4. Step 4: Simplify right side
    143,298.27x = 14,695,219,408.38
  5. Step 5: Solve for x
    x = 14,695,219,408.38/143,298.27
  6. Step 6: Final answer
    x = 102,549.87

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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.