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Finding the Third Proportional to 77,904,336 and 121,572,996

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Solution

The third proportional to 77,904,336 and 121,572,996 is: 189,719,778.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,904,336 : 121,572,996 = 121,572,996 : x
  2. Step 2: Convert to fraction form
    77,904,336/121,572,996 = 121,572,996/x
  3. Step 3: Cross multiply
    77,904,336x = 121,572,996 × 121,572,996
  4. Step 4: Simplify right side
    77,904,336x = 14,779,993,356,416,016
  5. Step 5: Solve for x
    x = 14,779,993,356,416,016/77,904,336
  6. Step 6: Final answer
    x = 189,719,778.32

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.