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Finding the Fourth Proportional to 108,170.88, 162,256.44 and 28,208.78

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Solution

The fourth proportional to 108,170.88, 162,256.44 and 28,208.78 is: 42,313.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,170.88 : 162,256.44 = 28,208.78 : x
  2. Step 2: Convert to fraction form
    108,170.88/162,256.44 = 28,208.78/x
  3. Step 3: Cross multiply
    108,170.88x = 162,256.44 × 28,208.78
  4. Step 4: Simplify right side
    108,170.88x = 4,577,055,408.26
  5. Step 5: Solve for x
    x = 4,577,055,408.26/108,170.88
  6. Step 6: Final answer
    x = 42,313.19

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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.