Home / 122,563.14-169,135.83-68,115

Finding the Fourth Proportional to 122,563.14, 169,135.83 and 68,115

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Solution

The fourth proportional to 122,563.14, 169,135.83 and 68,115 is: 93,997.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,563.14 : 169,135.83 = 68,115 : x
  2. Step 2: Convert to fraction form
    122,563.14/169,135.83 = 68,115/x
  3. Step 3: Cross multiply
    122,563.14x = 169,135.83 × 68,115
  4. Step 4: Simplify right side
    122,563.14x = 11,520,687,060.45
  5. Step 5: Solve for x
    x = 11,520,687,060.45/122,563.14
  6. Step 6: Final answer
    x = 93,997.98

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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.