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Finding the Third Proportional to 77,879,308.50 and 121,066,767

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Solution

The third proportional to 77,879,308.50 and 121,066,767 is: 188,203,546.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,879,308.50 : 121,066,767 = 121,066,767 : x
  2. Step 2: Convert to fraction form
    77,879,308.50/121,066,767 = 121,066,767/x
  3. Step 3: Cross multiply
    77,879,308.50x = 121,066,767 × 121,066,767
  4. Step 4: Simplify right side
    77,879,308.50x = 14,657,162,071,832,288
  5. Step 5: Solve for x
    x = 14,657,162,071,832,288/77,879,308.50
  6. Step 6: Final answer
    x = 188,203,546.67

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.