Home / 128,289.34-192,469.65-53,444.80

Finding the Fourth Proportional to 128,289.34, 192,469.65 and 53,444.80

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Solution

The fourth proportional to 128,289.34, 192,469.65 and 53,444.80 is: 80,182.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,289.34 : 192,469.65 = 53,444.80 : x
  2. Step 2: Convert to fraction form
    128,289.34/192,469.65 = 53,444.80/x
  3. Step 3: Cross multiply
    128,289.34x = 192,469.65 × 53,444.80
  4. Step 4: Simplify right side
    128,289.34x = 10,286,501,950.32
  5. Step 5: Solve for x
    x = 10,286,501,950.32/128,289.34
  6. Step 6: Final answer
    x = 80,182.05

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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.