Home / 128,865.80-193,317.06-40,128.24

Finding the Fourth Proportional to 128,865.80, 193,317.06 and 40,128.24

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Solution

The fourth proportional to 128,865.80, 193,317.06 and 40,128.24 is: 60,198.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,865.80 : 193,317.06 = 40,128.24 : x
  2. Step 2: Convert to fraction form
    128,865.80/193,317.06 = 40,128.24/x
  3. Step 3: Cross multiply
    128,865.80x = 193,317.06 × 40,128.24
  4. Step 4: Simplify right side
    128,865.80x = 7,757,473,379.77
  5. Step 5: Solve for x
    x = 7,757,473,379.77/128,865.80
  6. Step 6: Final answer
    x = 60,198.08

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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.