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Finding the Fourth Proportional to 159,913, 220,699.38 and 92,845

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Solution

The fourth proportional to 159,913, 220,699.38 and 92,845 is: 128,137.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,913 : 220,699.38 = 92,845 : x
  2. Step 2: Convert to fraction form
    159,913/220,699.38 = 92,845/x
  3. Step 3: Cross multiply
    159,913x = 220,699.38 × 92,845
  4. Step 4: Simplify right side
    159,913x = 20,490,833,936.10
  5. Step 5: Solve for x
    x = 20,490,833,936.10/159,913
  6. Step 6: Final answer
    x = 128,137.39

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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.