Home / 128,431.08-192,498.78-49,510.44

Finding the Fourth Proportional to 128,431.08, 192,498.78 and 49,510.44

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Solution

The fourth proportional to 128,431.08, 192,498.78 and 49,510.44 is: 74,208.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,431.08 : 192,498.78 = 49,510.44 : x
  2. Step 2: Convert to fraction form
    128,431.08/192,498.78 = 49,510.44/x
  3. Step 3: Cross multiply
    128,431.08x = 192,498.78 × 49,510.44
  4. Step 4: Simplify right side
    128,431.08x = 9,530,699,297.26
  5. Step 5: Solve for x
    x = 9,530,699,297.26/128,431.08
  6. Step 6: Final answer
    x = 74,208.67

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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.