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Finding the Fourth Proportional to 99,394.80, 149,173.80 and 98,617.20

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Solution

The fourth proportional to 99,394.80, 149,173.80 and 98,617.20 is: 148,006.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,394.80 : 149,173.80 = 98,617.20 : x
  2. Step 2: Convert to fraction form
    99,394.80/149,173.80 = 98,617.20/x
  3. Step 3: Cross multiply
    99,394.80x = 149,173.80 × 98,617.20
  4. Step 4: Simplify right side
    99,394.80x = 14,711,102,469.36
  5. Step 5: Solve for x
    x = 14,711,102,469.36/99,394.80
  6. Step 6: Final answer
    x = 148,006.76

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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.