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Finding the Fourth Proportional to 122,684.80, 184,027.20 and 39,578.80

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Solution

The fourth proportional to 122,684.80, 184,027.20 and 39,578.80 is: 59,368.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,684.80 : 184,027.20 = 39,578.80 : x
  2. Step 2: Convert to fraction form
    122,684.80/184,027.20 = 39,578.80/x
  3. Step 3: Cross multiply
    122,684.80x = 184,027.20 × 39,578.80
  4. Step 4: Simplify right side
    122,684.80x = 7,283,575,743.36
  5. Step 5: Solve for x
    x = 7,283,575,743.36/122,684.80
  6. Step 6: Final answer
    x = 59,368.20

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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.