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Finding the Fourth Proportional to 165,408.40, 248,112.60 and 102,422.80

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Solution

The fourth proportional to 165,408.40, 248,112.60 and 102,422.80 is: 153,634.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,408.40 : 248,112.60 = 102,422.80 : x
  2. Step 2: Convert to fraction form
    165,408.40/248,112.60 = 102,422.80/x
  3. Step 3: Cross multiply
    165,408.40x = 248,112.60 × 102,422.80
  4. Step 4: Simplify right side
    165,408.40x = 25,412,387,207.28
  5. Step 5: Solve for x
    x = 25,412,387,207.28/165,408.40
  6. Step 6: Final answer
    x = 153,634.20

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1.5x scale

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.