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Finding the Fourth Proportional to 151,393.73, 208,876.05 and 90,977.85

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Solution

The fourth proportional to 151,393.73, 208,876.05 and 90,977.85 is: 125,521.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,393.73 : 208,876.05 = 90,977.85 : x
  2. Step 2: Convert to fraction form
    151,393.73/208,876.05 = 90,977.85/x
  3. Step 3: Cross multiply
    151,393.73x = 208,876.05 × 90,977.85
  4. Step 4: Simplify right side
    151,393.73x = 19,003,093,945.49
  5. Step 5: Solve for x
    x = 19,003,093,945.49/151,393.73
  6. Step 6: Final answer
    x = 125,521.01

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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.