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Finding the Fourth Proportional to 108,969.40, 163,511.70 and 49,814.20

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Solution

The fourth proportional to 108,969.40, 163,511.70 and 49,814.20 is: 74,747.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,969.40 : 163,511.70 = 49,814.20 : x
  2. Step 2: Convert to fraction form
    108,969.40/163,511.70 = 49,814.20/x
  3. Step 3: Cross multiply
    108,969.40x = 163,511.70 × 49,814.20
  4. Step 4: Simplify right side
    108,969.40x = 8,145,204,526.14
  5. Step 5: Solve for x
    x = 8,145,204,526.14/108,969.40
  6. Step 6: Final answer
    x = 74,747.63

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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.