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Finding the Fourth Proportional to 122,361.60, 183,542.40 and 103,699.20

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Solution

The fourth proportional to 122,361.60, 183,542.40 and 103,699.20 is: 155,548.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,361.60 : 183,542.40 = 103,699.20 : x
  2. Step 2: Convert to fraction form
    122,361.60/183,542.40 = 103,699.20/x
  3. Step 3: Cross multiply
    122,361.60x = 183,542.40 × 103,699.20
  4. Step 4: Simplify right side
    122,361.60x = 19,033,200,046.08
  5. Step 5: Solve for x
    x = 19,033,200,046.08/122,361.60
  6. Step 6: Final answer
    x = 155,548.80

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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.