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Finding the Fourth Proportional to 128,047.72, 192,157.98 and 44,942.44

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Solution

The fourth proportional to 128,047.72, 192,157.98 and 44,942.44 is: 67,443.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,047.72 : 192,157.98 = 44,942.44 : x
  2. Step 2: Convert to fraction form
    128,047.72/192,157.98 = 44,942.44/x
  3. Step 3: Cross multiply
    128,047.72x = 192,157.98 × 44,942.44
  4. Step 4: Simplify right side
    128,047.72x = 8,636,048,486.67
  5. Step 5: Solve for x
    x = 8,636,048,486.67/128,047.72
  6. Step 6: Final answer
    x = 67,443.98

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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.