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Finding the Fourth Proportional to 131,363,669.70, 197,045,504.55 and 82,990,728.90

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Solution

The fourth proportional to 131,363,669.70, 197,045,504.55 and 82,990,728.90 is: 124,486,093.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,363,669.70 : 197,045,504.55 = 82,990,728.90 : x
  2. Step 2: Convert to fraction form
    131,363,669.70/197,045,504.55 = 82,990,728.90/x
  3. Step 3: Cross multiply
    131,363,669.70x = 197,045,504.55 × 82,990,728.90
  4. Step 4: Simplify right side
    131,363,669.70x = 16,352,950,049,072,768
  5. Step 5: Solve for x
    x = 16,352,950,049,072,768/131,363,669.70
  6. Step 6: Final answer
    x = 124,486,093.35

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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.