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Finding the Fourth Proportional to 108,200.88, 149,079.60 and 80,862.48

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Solution

The fourth proportional to 108,200.88, 149,079.60 and 80,862.48 is: 111,412.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,200.88 : 149,079.60 = 80,862.48 : x
  2. Step 2: Convert to fraction form
    108,200.88/149,079.60 = 80,862.48/x
  3. Step 3: Cross multiply
    108,200.88x = 149,079.60 × 80,862.48
  4. Step 4: Simplify right side
    108,200.88x = 12,054,946,173.41
  5. Step 5: Solve for x
    x = 12,054,946,173.41/108,200.88
  6. Step 6: Final answer
    x = 111,412.64

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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.