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Finding the Fourth Proportional to 108,699.80, 163,049.70 and 29,813.90

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Solution

The fourth proportional to 108,699.80, 163,049.70 and 29,813.90 is: 44,720.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,699.80 : 163,049.70 = 29,813.90 : x
  2. Step 2: Convert to fraction form
    108,699.80/163,049.70 = 29,813.90/x
  3. Step 3: Cross multiply
    108,699.80x = 163,049.70 × 29,813.90
  4. Step 4: Simplify right side
    108,699.80x = 4,861,147,450.83
  5. Step 5: Solve for x
    x = 4,861,147,450.83/108,699.80
  6. Step 6: Final answer
    x = 44,720.85

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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.