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Finding the Fourth Proportional to 143,586.61, 215,412.03 and 43,754.61

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Solution

The fourth proportional to 143,586.61, 215,412.03 and 43,754.61 is: 65,641.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,586.61 : 215,412.03 = 43,754.61 : x
  2. Step 2: Convert to fraction form
    143,586.61/215,412.03 = 43,754.61/x
  3. Step 3: Cross multiply
    143,586.61x = 215,412.03 × 43,754.61
  4. Step 4: Simplify right side
    143,586.61x = 9,425,269,361.96
  5. Step 5: Solve for x
    x = 9,425,269,361.96/143,586.61
  6. Step 6: Final answer
    x = 65,641.70

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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.