Home / 128,209.20-192,316.27-39,462.61

Finding the Fourth Proportional to 128,209.20, 192,316.27 and 39,462.61

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Solution

The fourth proportional to 128,209.20, 192,316.27 and 39,462.61 is: 59,194.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,209.20 : 192,316.27 = 39,462.61 : x
  2. Step 2: Convert to fraction form
    128,209.20/192,316.27 = 39,462.61/x
  3. Step 3: Cross multiply
    128,209.20x = 192,316.27 × 39,462.61
  4. Step 4: Simplify right side
    128,209.20x = 7,589,301,703.81
  5. Step 5: Solve for x
    x = 7,589,301,703.81/128,209.20
  6. Step 6: Final answer
    x = 59,194.67

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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.