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Finding the Fourth Proportional to 143,776.98, 215,665.47 and 55,057.68

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Solution

The fourth proportional to 143,776.98, 215,665.47 and 55,057.68 is: 82,586.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,776.98 : 215,665.47 = 55,057.68 : x
  2. Step 2: Convert to fraction form
    143,776.98/215,665.47 = 55,057.68/x
  3. Step 3: Cross multiply
    143,776.98x = 215,665.47 × 55,057.68
  4. Step 4: Simplify right side
    143,776.98x = 11,874,040,434.31
  5. Step 5: Solve for x
    x = 11,874,040,434.31/143,776.98
  6. Step 6: Final answer
    x = 82,586.52

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1.5x scale

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.