Home / 128,868.20-193,302.30-65,882.60

Finding the Fourth Proportional to 128,868.20, 193,302.30 and 65,882.60

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Solution

The fourth proportional to 128,868.20, 193,302.30 and 65,882.60 is: 98,823.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,868.20 : 193,302.30 = 65,882.60 : x
  2. Step 2: Convert to fraction form
    128,868.20/193,302.30 = 65,882.60/x
  3. Step 3: Cross multiply
    128,868.20x = 193,302.30 × 65,882.60
  4. Step 4: Simplify right side
    128,868.20x = 12,735,258,109.98
  5. Step 5: Solve for x
    x = 12,735,258,109.98/128,868.20
  6. Step 6: Final answer
    x = 98,823.90

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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.