Home / 128,555,576.24-177,417,636.26-72,810,912.92

Finding the Fourth Proportional to 128,555,576.24, 177,417,636.26 and 72,810,912.92

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Solution

The fourth proportional to 128,555,576.24, 177,417,636.26 and 72,810,912.92 is: 100,485,256.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,555,576.24 : 177,417,636.26 = 72,810,912.92 : x
  2. Step 2: Convert to fraction form
    128,555,576.24/177,417,636.26 = 72,810,912.92/x
  3. Step 3: Cross multiply
    128,555,576.24x = 177,417,636.26 × 72,810,912.92
  4. Step 4: Simplify right side
    128,555,576.24x = 12,917,940,062,947,952
  5. Step 5: Solve for x
    x = 12,917,940,062,947,952/128,555,576.24
  6. Step 6: Final answer
    x = 100,485,256.58

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