Home / 128,561,847.84-177,416,629.56-69,825,661.92

Finding the Fourth Proportional to 128,561,847.84, 177,416,629.56 and 69,825,661.92

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Solution

The fourth proportional to 128,561,847.84, 177,416,629.56 and 69,825,661.92 is: 96,360,108.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,561,847.84 : 177,416,629.56 = 69,825,661.92 : x
  2. Step 2: Convert to fraction form
    128,561,847.84/177,416,629.56 = 69,825,661.92/x
  3. Step 3: Cross multiply
    128,561,847.84x = 177,416,629.56 × 69,825,661.92
  4. Step 4: Simplify right side
    128,561,847.84x = 12,388,233,594,642,438
  5. Step 5: Solve for x
    x = 12,388,233,594,642,438/128,561,847.84
  6. Step 6: Final answer
    x = 96,360,108.41

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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.