Home / 128,782.09-193,171.07-35,287.84

Finding the Fourth Proportional to 128,782.09, 193,171.07 and 35,287.84

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Solution

The fourth proportional to 128,782.09, 193,171.07 and 35,287.84 is: 52,931.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,782.09 : 193,171.07 = 35,287.84 : x
  2. Step 2: Convert to fraction form
    128,782.09/193,171.07 = 35,287.84/x
  3. Step 3: Cross multiply
    128,782.09x = 193,171.07 × 35,287.84
  4. Step 4: Simplify right side
    128,782.09x = 6,816,589,810.79
  5. Step 5: Solve for x
    x = 6,816,589,810.79/128,782.09
  6. Step 6: Final answer
    x = 52,931.19

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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.