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Finding the Fourth Proportional to 108,811.80, 163,198.90 and 28,850.32

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Solution

The fourth proportional to 108,811.80, 163,198.90 and 28,850.32 is: 43,270.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,811.80 : 163,198.90 = 28,850.32 : x
  2. Step 2: Convert to fraction form
    108,811.80/163,198.90 = 28,850.32/x
  3. Step 3: Cross multiply
    108,811.80x = 163,198.90 × 28,850.32
  4. Step 4: Simplify right side
    108,811.80x = 4,708,340,728.71
  5. Step 5: Solve for x
    x = 4,708,340,728.71/108,811.80
  6. Step 6: Final answer
    x = 43,270.50

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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.