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Finding the Fourth Proportional to 122,360.76, 168,847.92 and 68,638.32

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Solution

The fourth proportional to 122,360.76, 168,847.92 and 68,638.32 is: 94,715.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,360.76 : 168,847.92 = 68,638.32 : x
  2. Step 2: Convert to fraction form
    122,360.76/168,847.92 = 68,638.32/x
  3. Step 3: Cross multiply
    122,360.76x = 168,847.92 × 68,638.32
  4. Step 4: Simplify right side
    122,360.76x = 11,589,437,564.29
  5. Step 5: Solve for x
    x = 11,589,437,564.29/122,360.76
  6. Step 6: Final answer
    x = 94,715.31

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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.