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Finding the Third Proportional to 81,780,247 and 122,730,240

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Solution

The third proportional to 81,780,247 and 122,730,240 is: 184,185,208.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,780,247 : 122,730,240 = 122,730,240 : x
  2. Step 2: Convert to fraction form
    81,780,247/122,730,240 = 122,730,240/x
  3. Step 3: Cross multiply
    81,780,247x = 122,730,240 × 122,730,240
  4. Step 4: Simplify right side
    81,780,247x = 15,062,711,810,457,600
  5. Step 5: Solve for x
    x = 15,062,711,810,457,600/81,780,247
  6. Step 6: Final answer
    x = 184,185,208.08

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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.