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Finding the Fourth Proportional to 122,506.60, 183,716.70 and 43,623.40

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Solution

The fourth proportional to 122,506.60, 183,716.70 and 43,623.40 is: 65,419.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,506.60 : 183,716.70 = 43,623.40 : x
  2. Step 2: Convert to fraction form
    122,506.60/183,716.70 = 43,623.40/x
  3. Step 3: Cross multiply
    122,506.60x = 183,716.70 × 43,623.40
  4. Step 4: Simplify right side
    122,506.60x = 8,014,347,090.78
  5. Step 5: Solve for x
    x = 8,014,347,090.78/122,506.60
  6. Step 6: Final answer
    x = 65,419.72

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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.