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Finding the Fourth Proportional to 102,963.40, 154,445.10 and 82,227.40

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Solution

The fourth proportional to 102,963.40, 154,445.10 and 82,227.40 is: 123,341.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,963.40 : 154,445.10 = 82,227.40 : x
  2. Step 2: Convert to fraction form
    102,963.40/154,445.10 = 82,227.40/x
  3. Step 3: Cross multiply
    102,963.40x = 154,445.10 × 82,227.40
  4. Step 4: Simplify right side
    102,963.40x = 12,699,619,015.74
  5. Step 5: Solve for x
    x = 12,699,619,015.74/102,963.40
  6. Step 6: Final answer
    x = 123,341.10

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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.