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Finding the Fourth Proportional to 143,157.16, 214,706.58 and 54,379.54

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Solution

The fourth proportional to 143,157.16, 214,706.58 and 54,379.54 is: 81,558.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,157.16 : 214,706.58 = 54,379.54 : x
  2. Step 2: Convert to fraction form
    143,157.16/214,706.58 = 54,379.54/x
  3. Step 3: Cross multiply
    143,157.16x = 214,706.58 × 54,379.54
  4. Step 4: Simplify right side
    143,157.16x = 11,675,645,055.37
  5. Step 5: Solve for x
    x = 11,675,645,055.37/143,157.16
  6. Step 6: Final answer
    x = 81,558.23

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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.