Home / 81,153,800,172.36-121,734,526,633.74-66,962,444,146.92

Finding the Fourth Proportional to 81,153,800,172.36, 121,734,526,633.74 and 66,962,444,146.92

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Solution

The fourth proportional to 81,153,800,172.36, 121,734,526,633.74 and 66,962,444,146.92 is: 100,446,823,477.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,153,800,172.36 : 121,734,526,633.74 = 66,962,444,146.92 : x
  2. Step 2: Convert to fraction form
    81,153,800,172.36/121,734,526,633.74 = 66,962,444,146.92/x
  3. Step 3: Cross multiply
    81,153,800,172.36x = 121,734,526,633.74 × 66,962,444,146.92
  4. Step 4: Simplify right side
    81,153,800,172.36x = 8,151,641,440,463,560,376,320
  5. Step 5: Solve for x
    x = 8,151,641,440,463,560,376,320/81,153,800,172.36
  6. Step 6: Final answer
    x = 100,446,823,477.77

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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.