Home / 111,500.65-153,820.62-66,180.54

Finding the Fourth Proportional to 111,500.65, 153,820.62 and 66,180.54

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Solution

The fourth proportional to 111,500.65, 153,820.62 and 66,180.54 is: 91,299.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,500.65 : 153,820.62 = 66,180.54 : x
  2. Step 2: Convert to fraction form
    111,500.65/153,820.62 = 66,180.54/x
  3. Step 3: Cross multiply
    111,500.65x = 153,820.62 × 66,180.54
  4. Step 4: Simplify right side
    111,500.65x = 10,179,932,271.56
  5. Step 5: Solve for x
    x = 10,179,932,271.56/111,500.65
  6. Step 6: Final answer
    x = 91,299.31

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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.