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Finding the Fourth Proportional to 102,815.80, 154,223.70 and 46,634.20

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Solution

The fourth proportional to 102,815.80, 154,223.70 and 46,634.20 is: 69,951.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,815.80 : 154,223.70 = 46,634.20 : x
  2. Step 2: Convert to fraction form
    102,815.80/154,223.70 = 46,634.20/x
  3. Step 3: Cross multiply
    102,815.80x = 154,223.70 × 46,634.20
  4. Step 4: Simplify right side
    102,815.80x = 7,192,098,870.54
  5. Step 5: Solve for x
    x = 7,192,098,870.54/102,815.80
  6. Step 6: Final answer
    x = 69,951.30

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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.