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Finding the Fourth Proportional to 143,090.10, 214,732.35 and 79,910.10

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Solution

The fourth proportional to 143,090.10, 214,732.35 and 79,910.10 is: 119,919.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,090.10 : 214,732.35 = 79,910.10 : x
  2. Step 2: Convert to fraction form
    143,090.10/214,732.35 = 79,910.10/x
  3. Step 3: Cross multiply
    143,090.10x = 214,732.35 × 79,910.10
  4. Step 4: Simplify right side
    143,090.10x = 17,159,283,561.74
  5. Step 5: Solve for x
    x = 17,159,283,561.74/143,090.10
  6. Step 6: Final answer
    x = 119,919.43

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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.