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Finding the Fourth Proportional to 97,226.80, 145,840.20 and 91,321.90

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Solution

The fourth proportional to 97,226.80, 145,840.20 and 91,321.90 is: 136,982.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,226.80 : 145,840.20 = 91,321.90 : x
  2. Step 2: Convert to fraction form
    97,226.80/145,840.20 = 91,321.90/x
  3. Step 3: Cross multiply
    97,226.80x = 145,840.20 × 91,321.90
  4. Step 4: Simplify right side
    97,226.80x = 13,318,404,160.38
  5. Step 5: Solve for x
    x = 13,318,404,160.38/97,226.80
  6. Step 6: Final answer
    x = 136,982.85

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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.