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Finding the Fourth Proportional to 143,483.70, 215,128.35 and 73,305.30

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Solution

The fourth proportional to 143,483.70, 215,128.35 and 73,305.30 is: 109,908.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,483.70 : 215,128.35 = 73,305.30 : x
  2. Step 2: Convert to fraction form
    143,483.70/215,128.35 = 73,305.30/x
  3. Step 3: Cross multiply
    143,483.70x = 215,128.35 × 73,305.30
  4. Step 4: Simplify right side
    143,483.70x = 15,770,048,235.26
  5. Step 5: Solve for x
    x = 15,770,048,235.26/143,483.70
  6. Step 6: Final answer
    x = 109,908.29

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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.