Home / 81,192,359.03-121,892,464.78-69,751,024.79

Finding the Fourth Proportional to 81,192,359.03, 121,892,464.78 and 69,751,024.79

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Solution

The fourth proportional to 81,192,359.03, 121,892,464.78 and 69,751,024.79 is: 104,715,818.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,192,359.03 : 121,892,464.78 = 69,751,024.79 : x
  2. Step 2: Convert to fraction form
    81,192,359.03/121,892,464.78 = 69,751,024.79/x
  3. Step 3: Cross multiply
    81,192,359.03x = 121,892,464.78 × 69,751,024.79
  4. Step 4: Simplify right side
    81,192,359.03x = 8,502,124,331,800,142
  5. Step 5: Solve for x
    x = 8,502,124,331,800,142/81,192,359.03
  6. Step 6: Final answer
    x = 104,715,818.51

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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.