Home / 128,623.80-192,935.70-45,526.20

Finding the Fourth Proportional to 128,623.80, 192,935.70 and 45,526.20

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Solution

The fourth proportional to 128,623.80, 192,935.70 and 45,526.20 is: 68,289.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,623.80 : 192,935.70 = 45,526.20 : x
  2. Step 2: Convert to fraction form
    128,623.80/192,935.70 = 45,526.20/x
  3. Step 3: Cross multiply
    128,623.80x = 192,935.70 × 45,526.20
  4. Step 4: Simplify right side
    128,623.80x = 8,783,629,265.34
  5. Step 5: Solve for x
    x = 8,783,629,265.34/128,623.80
  6. Step 6: Final answer
    x = 68,289.30

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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.