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Finding the Fourth Proportional to 108,618.96, 149,737.10 and 76,255.04

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Solution

The fourth proportional to 108,618.96, 149,737.10 and 76,255.04 is: 105,121.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,618.96 : 149,737.10 = 76,255.04 : x
  2. Step 2: Convert to fraction form
    108,618.96/149,737.10 = 76,255.04/x
  3. Step 3: Cross multiply
    108,618.96x = 149,737.10 × 76,255.04
  4. Step 4: Simplify right side
    108,618.96x = 11,418,207,420.02
  5. Step 5: Solve for x
    x = 11,418,207,420.02/108,618.96
  6. Step 6: Final answer
    x = 105,121.68

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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.