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Finding the Fourth Proportional to 102,939,797.70, 154,409,696.55 and 34,781,505.30

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Solution

The fourth proportional to 102,939,797.70, 154,409,696.55 and 34,781,505.30 is: 52,172,257.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,939,797.70 : 154,409,696.55 = 34,781,505.30 : x
  2. Step 2: Convert to fraction form
    102,939,797.70/154,409,696.55 = 34,781,505.30/x
  3. Step 3: Cross multiply
    102,939,797.70x = 154,409,696.55 × 34,781,505.30
  4. Step 4: Simplify right side
    102,939,797.70x = 5,370,601,678,925,217
  5. Step 5: Solve for x
    x = 5,370,601,678,925,217/102,939,797.70
  6. Step 6: Final answer
    x = 52,172,257.95

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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.