Home / 172,499,620.80-258,621,807.60-81,516,921.60

Finding the Fourth Proportional to 172,499,620.80, 258,621,807.60 and 81,516,921.60

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Solution

The fourth proportional to 172,499,620.80, 258,621,807.60 and 81,516,921.60 is: 122,215,072.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,499,620.80 : 258,621,807.60 = 81,516,921.60 : x
  2. Step 2: Convert to fraction form
    172,499,620.80/258,621,807.60 = 81,516,921.60/x
  3. Step 3: Cross multiply
    172,499,620.80x = 258,621,807.60 × 81,516,921.60
  4. Step 4: Simplify right side
    172,499,620.80x = 21,082,053,614,179,484
  5. Step 5: Solve for x
    x = 21,082,053,614,179,484/172,499,620.80
  6. Step 6: Final answer
    x = 122,215,072.22

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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.