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Finding the Fourth Proportional to 159,893.84, 220,628.37 and 91,897.69

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Solution

The fourth proportional to 159,893.84, 220,628.37 and 91,897.69 is: 126,804.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,893.84 : 220,628.37 = 91,897.69 : x
  2. Step 2: Convert to fraction form
    159,893.84/220,628.37 = 91,897.69/x
  3. Step 3: Cross multiply
    159,893.84x = 220,628.37 × 91,897.69
  4. Step 4: Simplify right side
    159,893.84x = 20,275,236,999.89
  5. Step 5: Solve for x
    x = 20,275,236,999.89/159,893.84
  6. Step 6: Final answer
    x = 126,804.36

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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.