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Finding the Fourth Proportional to 99,774.80, 149,662.20 and 82,060.10

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Solution

The fourth proportional to 99,774.80, 149,662.20 and 82,060.10 is: 123,090.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,774.80 : 149,662.20 = 82,060.10 : x
  2. Step 2: Convert to fraction form
    99,774.80/149,662.20 = 82,060.10/x
  3. Step 3: Cross multiply
    99,774.80x = 149,662.20 × 82,060.10
  4. Step 4: Simplify right side
    99,774.80x = 12,281,295,098.22
  5. Step 5: Solve for x
    x = 12,281,295,098.22/99,774.80
  6. Step 6: Final answer
    x = 123,090.15

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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.