Home / 131,616,832.45-181,629,003.79-72,878,233.36

Finding the Fourth Proportional to 131,616,832.45, 181,629,003.79 and 72,878,233.36

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Solution

The fourth proportional to 131,616,832.45, 181,629,003.79 and 72,878,233.36 is: 100,570,730.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,616,832.45 : 181,629,003.79 = 72,878,233.36 : x
  2. Step 2: Convert to fraction form
    131,616,832.45/181,629,003.79 = 72,878,233.36/x
  3. Step 3: Cross multiply
    131,616,832.45x = 181,629,003.79 × 72,878,233.36
  4. Step 4: Simplify right side
    131,616,832.45x = 13,236,800,923,151,944
  5. Step 5: Solve for x
    x = 13,236,800,923,151,944/131,616,832.45
  6. Step 6: Final answer
    x = 100,570,730.03

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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.