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Finding the Fourth Proportional to 143,374.19, 215,063.30 and 54,632.54

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Solution

The fourth proportional to 143,374.19, 215,063.30 and 54,632.54 is: 81,949.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,374.19 : 215,063.30 = 54,632.54 : x
  2. Step 2: Convert to fraction form
    143,374.19/215,063.30 = 54,632.54/x
  3. Step 3: Cross multiply
    143,374.19x = 215,063.30 × 54,632.54
  4. Step 4: Simplify right side
    143,374.19x = 11,749,455,014.02
  5. Step 5: Solve for x
    x = 11,749,455,014.02/143,374.19
  6. Step 6: Final answer
    x = 81,949.59

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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.