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Finding the Fourth Proportional to 143,187.36, 214,871.49 and 80,048.91

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Solution

The fourth proportional to 143,187.36, 214,871.49 and 80,048.91 is: 120,123.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,187.36 : 214,871.49 = 80,048.91 : x
  2. Step 2: Convert to fraction form
    143,187.36/214,871.49 = 80,048.91/x
  3. Step 3: Cross multiply
    143,187.36x = 214,871.49 × 80,048.91
  4. Step 4: Simplify right side
    143,187.36x = 17,200,228,564.58
  5. Step 5: Solve for x
    x = 17,200,228,564.58/143,187.36
  6. Step 6: Final answer
    x = 120,123.93

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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.