Home / 128,480,568.87-177,303,410.01-69,743,273.88

Finding the Fourth Proportional to 128,480,568.87, 177,303,410.01 and 69,743,273.88

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Solution

The fourth proportional to 128,480,568.87, 177,303,410.01 and 69,743,273.88 is: 96,245,840.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,480,568.87 : 177,303,410.01 = 69,743,273.88 : x
  2. Step 2: Convert to fraction form
    128,480,568.87/177,303,410.01 = 69,743,273.88/x
  3. Step 3: Cross multiply
    128,480,568.87x = 177,303,410.01 × 69,743,273.88
  4. Step 4: Simplify right side
    128,480,568.87x = 12,365,720,283,836,646
  5. Step 5: Solve for x
    x = 12,365,720,283,836,646/128,480,568.87
  6. Step 6: Final answer
    x = 96,245,840.07

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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.