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Finding the Fourth Proportional to 151,144.44, 208,609.17 and 86,657.01

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Solution

The fourth proportional to 151,144.44, 208,609.17 and 86,657.01 is: 119,603.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,144.44 : 208,609.17 = 86,657.01 : x
  2. Step 2: Convert to fraction form
    151,144.44/208,609.17 = 86,657.01/x
  3. Step 3: Cross multiply
    151,144.44x = 208,609.17 × 86,657.01
  4. Step 4: Simplify right side
    151,144.44x = 18,077,446,930.78
  5. Step 5: Solve for x
    x = 18,077,446,930.78/151,144.44
  6. Step 6: Final answer
    x = 119,603.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.