Home / 111,338.35-153,640.40-66,020.67

Finding the Fourth Proportional to 111,338.35, 153,640.40 and 66,020.67

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Solution

The fourth proportional to 111,338.35, 153,640.40 and 66,020.67 is: 91,104.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,338.35 : 153,640.40 = 66,020.67 : x
  2. Step 2: Convert to fraction form
    111,338.35/153,640.40 = 66,020.67/x
  3. Step 3: Cross multiply
    111,338.35x = 153,640.40 × 66,020.67
  4. Step 4: Simplify right side
    111,338.35x = 10,143,441,816.96
  5. Step 5: Solve for x
    x = 10,143,441,816.96/111,338.35
  6. Step 6: Final answer
    x = 91,104.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.