Home / 128,896.38-193,115.61-53,851.23

Finding the Fourth Proportional to 128,896.38, 193,115.61 and 53,851.23

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Solution

The fourth proportional to 128,896.38, 193,115.61 and 53,851.23 is: 80,681.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,896.38 : 193,115.61 = 53,851.23 : x
  2. Step 2: Convert to fraction form
    128,896.38/193,115.61 = 53,851.23/x
  3. Step 3: Cross multiply
    128,896.38x = 193,115.61 × 53,851.23
  4. Step 4: Simplify right side
    128,896.38x = 10,399,513,130.70
  5. Step 5: Solve for x
    x = 10,399,513,130.70/128,896.38
  6. Step 6: Final answer
    x = 80,681.19

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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.