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Finding the Fourth Proportional to 102,920.10, 154,380.15 and 63,554.10

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Solution

The fourth proportional to 102,920.10, 154,380.15 and 63,554.10 is: 95,331.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,920.10 : 154,380.15 = 63,554.10 : x
  2. Step 2: Convert to fraction form
    102,920.10/154,380.15 = 63,554.10/x
  3. Step 3: Cross multiply
    102,920.10x = 154,380.15 × 63,554.10
  4. Step 4: Simplify right side
    102,920.10x = 9,811,491,491.12
  5. Step 5: Solve for x
    x = 9,811,491,491.12/102,920.10
  6. Step 6: Final answer
    x = 95,331.15

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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.