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Finding the Third Proportional to 79,211,531 and 121,172,178

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Solution

The third proportional to 79,211,531 and 121,172,178 is: 185,360,597.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,211,531 : 121,172,178 = 121,172,178 : x
  2. Step 2: Convert to fraction form
    79,211,531/121,172,178 = 121,172,178/x
  3. Step 3: Cross multiply
    79,211,531x = 121,172,178 × 121,172,178
  4. Step 4: Simplify right side
    79,211,531x = 14,682,696,721,263,684
  5. Step 5: Solve for x
    x = 14,682,696,721,263,684/79,211,531
  6. Step 6: Final answer
    x = 185,360,597.58

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.