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Finding the Fourth Proportional to 169,242.40, 253,863.60 and 122,003.20

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Solution

The fourth proportional to 169,242.40, 253,863.60 and 122,003.20 is: 183,004.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,242.40 : 253,863.60 = 122,003.20 : x
  2. Step 2: Convert to fraction form
    169,242.40/253,863.60 = 122,003.20/x
  3. Step 3: Cross multiply
    169,242.40x = 253,863.60 × 122,003.20
  4. Step 4: Simplify right side
    169,242.40x = 30,972,171,563.52
  5. Step 5: Solve for x
    x = 30,972,171,563.52/169,242.40
  6. Step 6: Final answer
    x = 183,004.80

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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.