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Finding the Third Proportional to 90,744,690 and 139,481,091

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Solution

The third proportional to 90,744,690 and 139,481,091 is: 214,392,431.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,744,690 : 139,481,091 = 139,481,091 : x
  2. Step 2: Convert to fraction form
    90,744,690/139,481,091 = 139,481,091/x
  3. Step 3: Cross multiply
    90,744,690x = 139,481,091 × 139,481,091
  4. Step 4: Simplify right side
    90,744,690x = 19,454,974,746,550,280
  5. Step 5: Solve for x
    x = 19,454,974,746,550,280/90,744,690
  6. Step 6: Final answer
    x = 214,392,431.63

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.