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Finding the Third Proportional to 78,555,694 and 170,709,054

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Solution

The third proportional to 78,555,694 and 170,709,054 is: 370,967,139.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,555,694 : 170,709,054 = 170,709,054 : x
  2. Step 2: Convert to fraction form
    78,555,694/170,709,054 = 170,709,054/x
  3. Step 3: Cross multiply
    78,555,694x = 170,709,054 × 170,709,054
  4. Step 4: Simplify right side
    78,555,694x = 29,141,581,117,574,916
  5. Step 5: Solve for x
    x = 29,141,581,117,574,916/78,555,694
  6. Step 6: Final answer
    x = 370,967,139.79

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.