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Finding the Fourth Proportional to 136,159.38, 203,889.15 and 83,408.94

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Solution

The fourth proportional to 136,159.38, 203,889.15 and 83,408.94 is: 124,899.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,159.38 : 203,889.15 = 83,408.94 : x
  2. Step 2: Convert to fraction form
    136,159.38/203,889.15 = 83,408.94/x
  3. Step 3: Cross multiply
    136,159.38x = 203,889.15 × 83,408.94
  4. Step 4: Simplify right side
    136,159.38x = 17,006,177,879.00
  5. Step 5: Solve for x
    x = 17,006,177,879.00/136,159.38
  6. Step 6: Final answer
    x = 124,899.05

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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.