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Finding the Fourth Proportional to 165,090.70, 247,636.05 and 138,846.70

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Solution

The fourth proportional to 165,090.70, 247,636.05 and 138,846.70 is: 208,270.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,090.70 : 247,636.05 = 138,846.70 : x
  2. Step 2: Convert to fraction form
    165,090.70/247,636.05 = 138,846.70/x
  3. Step 3: Cross multiply
    165,090.70x = 247,636.05 × 138,846.70
  4. Step 4: Simplify right side
    165,090.70x = 34,383,448,343.54
  5. Step 5: Solve for x
    x = 34,383,448,343.54/165,090.70
  6. Step 6: Final answer
    x = 208,270.05

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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.