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Finding the Fourth Proportional to 99,230.60, 148,869.90 and 29,112.20

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Solution

The fourth proportional to 99,230.60, 148,869.90 and 29,112.20 is: 43,675.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,230.60 : 148,869.90 = 29,112.20 : x
  2. Step 2: Convert to fraction form
    99,230.60/148,869.90 = 29,112.20/x
  3. Step 3: Cross multiply
    99,230.60x = 148,869.90 × 29,112.20
  4. Step 4: Simplify right side
    99,230.60x = 4,333,930,302.78
  5. Step 5: Solve for x
    x = 4,333,930,302.78/99,230.60
  6. Step 6: Final answer
    x = 43,675.34

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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.