Home / 108,046.20-162,069.30-68,631.60

Finding the Fourth Proportional to 108,046.20, 162,069.30 and 68,631.60

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Solution

The fourth proportional to 108,046.20, 162,069.30 and 68,631.60 is: 102,947.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,046.20 : 162,069.30 = 68,631.60 : x
  2. Step 2: Convert to fraction form
    108,046.20/162,069.30 = 68,631.60/x
  3. Step 3: Cross multiply
    108,046.20x = 162,069.30 × 68,631.60
  4. Step 4: Simplify right side
    108,046.20x = 11,123,075,369.88
  5. Step 5: Solve for x
    x = 11,123,075,369.88/108,046.20
  6. Step 6: Final answer
    x = 102,947.40

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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.