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Finding the Fourth Proportional to 128,415.78, 192,492.45 and 44,150.67

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Solution

The fourth proportional to 128,415.78, 192,492.45 and 44,150.67 is: 66,180.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,415.78 : 192,492.45 = 44,150.67 : x
  2. Step 2: Convert to fraction form
    128,415.78/192,492.45 = 44,150.67/x
  3. Step 3: Cross multiply
    128,415.78x = 192,492.45 × 44,150.67
  4. Step 4: Simplify right side
    128,415.78x = 8,498,670,637.44
  5. Step 5: Solve for x
    x = 8,498,670,637.44/128,415.78
  6. Step 6: Final answer
    x = 66,180.89

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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.