Home / 128,285.91-192,259.26-92,865.60

Finding the Fourth Proportional to 128,285.91, 192,259.26 and 92,865.60

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Solution

The fourth proportional to 128,285.91, 192,259.26 and 92,865.60 is: 139,175.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,285.91 : 192,259.26 = 92,865.60 : x
  2. Step 2: Convert to fraction form
    128,285.91/192,259.26 = 92,865.60/x
  3. Step 3: Cross multiply
    128,285.91x = 192,259.26 × 92,865.60
  4. Step 4: Simplify right side
    128,285.91x = 17,854,271,535.46
  5. Step 5: Solve for x
    x = 17,854,271,535.46/128,285.91
  6. Step 6: Final answer
    x = 139,175.62

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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.