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Finding the Third Proportional to 85,643,118.75 and 128,490,930

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Solution

The third proportional to 85,643,118.75 and 128,490,930 is: 192,775,780.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,643,118.75 : 128,490,930 = 128,490,930 : x
  2. Step 2: Convert to fraction form
    85,643,118.75/128,490,930 = 128,490,930/x
  3. Step 3: Cross multiply
    85,643,118.75x = 128,490,930 × 128,490,930
  4. Step 4: Simplify right side
    85,643,118.75x = 16,509,919,092,264,900
  5. Step 5: Solve for x
    x = 16,509,919,092,264,900/85,643,118.75
  6. Step 6: Final answer
    x = 192,775,780.86

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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.