Home / 128,536.20-192,804.30-75,918.60

Finding the Fourth Proportional to 128,536.20, 192,804.30 and 75,918.60

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Solution

The fourth proportional to 128,536.20, 192,804.30 and 75,918.60 is: 113,877.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,536.20 : 192,804.30 = 75,918.60 : x
  2. Step 2: Convert to fraction form
    128,536.20/192,804.30 = 75,918.60/x
  3. Step 3: Cross multiply
    128,536.20x = 192,804.30 × 75,918.60
  4. Step 4: Simplify right side
    128,536.20x = 14,637,432,529.98
  5. Step 5: Solve for x
    x = 14,637,432,529.98/128,536.20
  6. Step 6: Final answer
    x = 113,877.90

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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.