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Finding the Fourth Proportional to 135,879.59, 203,887.13 and 61,053.21

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Solution

The fourth proportional to 135,879.59, 203,887.13 and 61,053.21 is: 91,610.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,879.59 : 203,887.13 = 61,053.21 : x
  2. Step 2: Convert to fraction form
    135,879.59/203,887.13 = 61,053.21/x
  3. Step 3: Cross multiply
    135,879.59x = 203,887.13 × 61,053.21
  4. Step 4: Simplify right side
    135,879.59x = 12,447,963,458.92
  5. Step 5: Solve for x
    x = 12,447,963,458.92/135,879.59
  6. Step 6: Final answer
    x = 91,610.25

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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.