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Finding the Fourth Proportional to 143,779.74, 215,566.46 and 54,958.38

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Solution

The fourth proportional to 143,779.74, 215,566.46 and 54,958.38 is: 82,398.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,779.74 : 215,566.46 = 54,958.38 : x
  2. Step 2: Convert to fraction form
    143,779.74/215,566.46 = 54,958.38/x
  3. Step 3: Cross multiply
    143,779.74x = 215,566.46 × 54,958.38
  4. Step 4: Simplify right side
    143,779.74x = 11,847,183,423.93
  5. Step 5: Solve for x
    x = 11,847,183,423.93/143,779.74
  6. Step 6: Final answer
    x = 82,398.14

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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.