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Finding the Fourth Proportional to 128,258.94, 192,391.14 and 44,018.74

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Solution

The fourth proportional to 128,258.94, 192,391.14 and 44,018.74 is: 66,029.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,258.94 : 192,391.14 = 44,018.74 : x
  2. Step 2: Convert to fraction form
    128,258.94/192,391.14 = 44,018.74/x
  3. Step 3: Cross multiply
    128,258.94x = 192,391.14 × 44,018.74
  4. Step 4: Simplify right side
    128,258.94x = 8,468,814,608.01
  5. Step 5: Solve for x
    x = 8,468,814,608.01/128,258.94
  6. Step 6: Final answer
    x = 66,029.04

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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.