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Finding the Fourth Proportional to 122,918.40, 184,435.20 and 63,820.80

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Solution

The fourth proportional to 122,918.40, 184,435.20 and 63,820.80 is: 95,761.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,918.40 : 184,435.20 = 63,820.80 : x
  2. Step 2: Convert to fraction form
    122,918.40/184,435.20 = 63,820.80/x
  3. Step 3: Cross multiply
    122,918.40x = 184,435.20 × 63,820.80
  4. Step 4: Simplify right side
    122,918.40x = 11,770,802,012.16
  5. Step 5: Solve for x
    x = 11,770,802,012.16/122,918.40
  6. Step 6: Final answer
    x = 95,761.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.