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Finding the Third Proportional to 81,370,630.50 and 178,543,974.50

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Solution

The third proportional to 81,370,630.50 and 178,543,974.50 is: 391,762,367.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,370,630.50 : 178,543,974.50 = 178,543,974.50 : x
  2. Step 2: Convert to fraction form
    81,370,630.50/178,543,974.50 = 178,543,974.50/x
  3. Step 3: Cross multiply
    81,370,630.50x = 178,543,974.50 × 178,543,974.50
  4. Step 4: Simplify right side
    81,370,630.50x = 31,877,950,830,256,652
  5. Step 5: Solve for x
    x = 31,877,950,830,256,652/81,370,630.50
  6. Step 6: Final answer
    x = 391,762,367.26

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.