Home / 128,622.06-192,940.37-39,888.18

Finding the Fourth Proportional to 128,622.06, 192,940.37 and 39,888.18

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Solution

The fourth proportional to 128,622.06, 192,940.37 and 39,888.18 is: 59,834.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,622.06 : 192,940.37 = 39,888.18 : x
  2. Step 2: Convert to fraction form
    128,622.06/192,940.37 = 39,888.18/x
  3. Step 3: Cross multiply
    128,622.06x = 192,940.37 × 39,888.18
  4. Step 4: Simplify right side
    128,622.06x = 7,696,040,307.55
  5. Step 5: Solve for x
    x = 7,696,040,307.55/128,622.06
  6. Step 6: Final answer
    x = 59,834.53

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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.