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Finding the Fourth Proportional to 122,287.40, 183,431.10 and 43,409.60

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Solution

The fourth proportional to 122,287.40, 183,431.10 and 43,409.60 is: 65,114.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,287.40 : 183,431.10 = 43,409.60 : x
  2. Step 2: Convert to fraction form
    122,287.40/183,431.10 = 43,409.60/x
  3. Step 3: Cross multiply
    122,287.40x = 183,431.10 × 43,409.60
  4. Step 4: Simplify right side
    122,287.40x = 7,962,670,678.56
  5. Step 5: Solve for x
    x = 7,962,670,678.56/122,287.40
  6. Step 6: Final answer
    x = 65,114.40

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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.