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Finding the Fourth Proportional to 141,071.96, 211,667.31 and 87,808.49

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Solution

The fourth proportional to 141,071.96, 211,667.31 and 87,808.49 is: 131,749.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,071.96 : 211,667.31 = 87,808.49 : x
  2. Step 2: Convert to fraction form
    141,071.96/211,667.31 = 87,808.49/x
  3. Step 3: Cross multiply
    141,071.96x = 211,667.31 × 87,808.49
  4. Step 4: Simplify right side
    141,071.96x = 18,586,186,608.88
  5. Step 5: Solve for x
    x = 18,586,186,608.88/141,071.96
  6. Step 6: Final answer
    x = 131,749.68

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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.