Home / 128,233.96-177,029.22-88,420.84

Finding the Fourth Proportional to 128,233.96, 177,029.22 and 88,420.84

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Solution

The fourth proportional to 128,233.96, 177,029.22 and 88,420.84 is: 122,066.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,233.96 : 177,029.22 = 88,420.84 : x
  2. Step 2: Convert to fraction form
    128,233.96/177,029.22 = 88,420.84/x
  3. Step 3: Cross multiply
    128,233.96x = 177,029.22 × 88,420.84
  4. Step 4: Simplify right side
    128,233.96x = 15,653,072,336.94
  5. Step 5: Solve for x
    x = 15,653,072,336.94/128,233.96
  6. Step 6: Final answer
    x = 122,066.51

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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.