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Finding the Fourth Proportional to 168,021.10, 252,104.55 and 84,915.10

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Solution

The fourth proportional to 168,021.10, 252,104.55 and 84,915.10 is: 127,409.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,021.10 : 252,104.55 = 84,915.10 : x
  2. Step 2: Convert to fraction form
    168,021.10/252,104.55 = 84,915.10/x
  3. Step 3: Cross multiply
    168,021.10x = 252,104.55 × 84,915.10
  4. Step 4: Simplify right side
    168,021.10x = 21,407,483,073.71
  5. Step 5: Solve for x
    x = 21,407,483,073.71/168,021.10
  6. Step 6: Final answer
    x = 127,409.49

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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.