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Finding the Fourth Proportional to 136,641.59, 203,603.99 and 121,735.97

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Solution

The fourth proportional to 136,641.59, 203,603.99 and 121,735.97 is: 181,393.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,641.59 : 203,603.99 = 121,735.97 : x
  2. Step 2: Convert to fraction form
    136,641.59/203,603.99 = 121,735.97/x
  3. Step 3: Cross multiply
    136,641.59x = 203,603.99 × 121,735.97
  4. Step 4: Simplify right side
    136,641.59x = 24,785,929,218.52
  5. Step 5: Solve for x
    x = 24,785,929,218.52/136,641.59
  6. Step 6: Final answer
    x = 181,393.74

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.