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Finding the Fourth Proportional to 97,489.80, 146,256.30 and 76,494.60

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Solution

The fourth proportional to 97,489.80, 146,256.30 and 76,494.60 is: 114,758.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,489.80 : 146,256.30 = 76,494.60 : x
  2. Step 2: Convert to fraction form
    97,489.80/146,256.30 = 76,494.60/x
  3. Step 3: Cross multiply
    97,489.80x = 146,256.30 × 76,494.60
  4. Step 4: Simplify right side
    97,489.80x = 11,187,817,165.98
  5. Step 5: Solve for x
    x = 11,187,817,165.98/97,489.80
  6. Step 6: Final answer
    x = 114,758.85

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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.