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Finding the Fourth Proportional to 102,982.20, 154,358.10 and 43,807.80

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Solution

The fourth proportional to 102,982.20, 154,358.10 and 43,807.80 is: 65,662.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,982.20 : 154,358.10 = 43,807.80 : x
  2. Step 2: Convert to fraction form
    102,982.20/154,358.10 = 43,807.80/x
  3. Step 3: Cross multiply
    102,982.20x = 154,358.10 × 43,807.80
  4. Step 4: Simplify right side
    102,982.20x = 6,762,088,773.18
  5. Step 5: Solve for x
    x = 6,762,088,773.18/102,982.20
  6. Step 6: Final answer
    x = 65,662.69

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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.