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Finding the Fourth Proportional to 122,230.56, 168,677.94 and 74,484

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Solution

The fourth proportional to 122,230.56, 168,677.94 and 74,484 is: 102,787.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,230.56 : 168,677.94 = 74,484 : x
  2. Step 2: Convert to fraction form
    122,230.56/168,677.94 = 74,484/x
  3. Step 3: Cross multiply
    122,230.56x = 168,677.94 × 74,484
  4. Step 4: Simplify right side
    122,230.56x = 12,563,807,682.96
  5. Step 5: Solve for x
    x = 12,563,807,682.96/122,230.56
  6. Step 6: Final answer
    x = 102,787.78

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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.