Home / 128,785.51-193,177.32-40,038.85

Finding the Fourth Proportional to 128,785.51, 193,177.32 and 40,038.85

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Solution

The fourth proportional to 128,785.51, 193,177.32 and 40,038.85 is: 60,057.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,785.51 : 193,177.32 = 40,038.85 : x
  2. Step 2: Convert to fraction form
    128,785.51/193,177.32 = 40,038.85/x
  3. Step 3: Cross multiply
    128,785.51x = 193,177.32 × 40,038.85
  4. Step 4: Simplify right side
    128,785.51x = 7,734,597,738.88
  5. Step 5: Solve for x
    x = 7,734,597,738.88/128,785.51
  6. Step 6: Final answer
    x = 60,057.98

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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.