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Finding the Fourth Proportional to 108,894.75, 149,808.20 and 104,229.15

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Solution

The fourth proportional to 108,894.75, 149,808.20 and 104,229.15 is: 143,389.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,894.75 : 149,808.20 = 104,229.15 : x
  2. Step 2: Convert to fraction form
    108,894.75/149,808.20 = 104,229.15/x
  3. Step 3: Cross multiply
    108,894.75x = 149,808.20 × 104,229.15
  4. Step 4: Simplify right side
    108,894.75x = 15,614,380,827.88
  5. Step 5: Solve for x
    x = 15,614,380,827.88/108,894.75
  6. Step 6: Final answer
    x = 143,389.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.