Home / 128,408.29-192,638.69-44,157.50

Finding the Fourth Proportional to 128,408.29, 192,638.69 and 44,157.50

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Solution

The fourth proportional to 128,408.29, 192,638.69 and 44,157.50 is: 66,245.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,408.29 : 192,638.69 = 44,157.50 : x
  2. Step 2: Convert to fraction form
    128,408.29/192,638.69 = 44,157.50/x
  3. Step 3: Cross multiply
    128,408.29x = 192,638.69 × 44,157.50
  4. Step 4: Simplify right side
    128,408.29x = 8,506,443,741.27
  5. Step 5: Solve for x
    x = 8,506,443,741.27/128,408.29
  6. Step 6: Final answer
    x = 66,245.29

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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.