Home / 128,884.09-193,355.66-40,132.57

Finding the Fourth Proportional to 128,884.09, 193,355.66 and 40,132.57

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Solution

The fourth proportional to 128,884.09, 193,355.66 and 40,132.57 is: 60,208.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,884.09 : 193,355.66 = 40,132.57 : x
  2. Step 2: Convert to fraction form
    128,884.09/193,355.66 = 40,132.57/x
  3. Step 3: Cross multiply
    128,884.09x = 193,355.66 × 40,132.57
  4. Step 4: Simplify right side
    128,884.09x = 7,759,859,359.18
  5. Step 5: Solve for x
    x = 7,759,859,359.18/128,884.09
  6. Step 6: Final answer
    x = 60,208.05

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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.