Home / 128,361.51-177,183.45-88,208.19

Finding the Fourth Proportional to 128,361.51, 177,183.45 and 88,208.19

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Solution

The fourth proportional to 128,361.51, 177,183.45 and 88,208.19 is: 121,757.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,361.51 : 177,183.45 = 88,208.19 : x
  2. Step 2: Convert to fraction form
    128,361.51/177,183.45 = 88,208.19/x
  3. Step 3: Cross multiply
    128,361.51x = 177,183.45 × 88,208.19
  4. Step 4: Simplify right side
    128,361.51x = 15,629,031,422.46
  5. Step 5: Solve for x
    x = 15,629,031,422.46/128,361.51
  6. Step 6: Final answer
    x = 121,757.93

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1.5x scale

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.