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Finding the Fourth Proportional to 120,944,803, 166,917,997.68 and 68,741,685.72

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Solution

The fourth proportional to 120,944,803, 166,917,997.68 and 68,741,685.72 is: 94,871,579.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,944,803 : 166,917,997.68 = 68,741,685.72 : x
  2. Step 2: Convert to fraction form
    120,944,803/166,917,997.68 = 68,741,685.72/x
  3. Step 3: Cross multiply
    120,944,803x = 166,917,997.68 × 68,741,685.72
  4. Step 4: Simplify right side
    120,944,803x = 11,474,224,537,530,250
  5. Step 5: Solve for x
    x = 11,474,224,537,530,250/120,944,803
  6. Step 6: Final answer
    x = 94,871,579.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.