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Finding the Fourth Proportional to 108,963.80, 163,056.90 and 99,632.60

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Solution

The fourth proportional to 108,963.80, 163,056.90 and 99,632.60 is: 149,093.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,963.80 : 163,056.90 = 99,632.60 : x
  2. Step 2: Convert to fraction form
    108,963.80/163,056.90 = 99,632.60/x
  3. Step 3: Cross multiply
    108,963.80x = 163,056.90 × 99,632.60
  4. Step 4: Simplify right side
    108,963.80x = 16,245,782,894.94
  5. Step 5: Solve for x
    x = 16,245,782,894.94/108,963.80
  6. Step 6: Final answer
    x = 149,093.40

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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.