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Finding the Fourth Proportional to 97,679.80, 146,519.70 and 87,830.20

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Solution

The fourth proportional to 97,679.80, 146,519.70 and 87,830.20 is: 131,745.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,679.80 : 146,519.70 = 87,830.20 : x
  2. Step 2: Convert to fraction form
    97,679.80/146,519.70 = 87,830.20/x
  3. Step 3: Cross multiply
    97,679.80x = 146,519.70 × 87,830.20
  4. Step 4: Simplify right side
    97,679.80x = 12,868,854,554.94
  5. Step 5: Solve for x
    x = 12,868,854,554.94/97,679.80
  6. Step 6: Final answer
    x = 131,745.30

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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.