Home / 128,796.09-193,154.75-89,070.38

Finding the Fourth Proportional to 128,796.09, 193,154.75 and 89,070.38

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Solution

The fourth proportional to 128,796.09, 193,154.75 and 89,070.38 is: 133,578.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,796.09 : 193,154.75 = 89,070.38 : x
  2. Step 2: Convert to fraction form
    128,796.09/193,154.75 = 89,070.38/x
  3. Step 3: Cross multiply
    128,796.09x = 193,154.75 × 89,070.38
  4. Step 4: Simplify right side
    128,796.09x = 17,204,366,335.79
  5. Step 5: Solve for x
    x = 17,204,366,335.79/128,796.09
  6. Step 6: Final answer
    x = 133,578.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.