Home / 128,137.72-192,233.58-48,176.20

Finding the Fourth Proportional to 128,137.72, 192,233.58 and 48,176.20

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Solution

The fourth proportional to 128,137.72, 192,233.58 and 48,176.20 is: 72,274.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,137.72 : 192,233.58 = 48,176.20 : x
  2. Step 2: Convert to fraction form
    128,137.72/192,233.58 = 48,176.20/x
  3. Step 3: Cross multiply
    128,137.72x = 192,233.58 × 48,176.20
  4. Step 4: Simplify right side
    128,137.72x = 9,261,083,396.80
  5. Step 5: Solve for x
    x = 9,261,083,396.80/128,137.72
  6. Step 6: Final answer
    x = 72,274.45

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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.