Home / 111,512.89-153,817.80-66,158.77

Finding the Fourth Proportional to 111,512.89, 153,817.80 and 66,158.77

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Solution

The fourth proportional to 111,512.89, 153,817.80 and 66,158.77 is: 91,257.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,512.89 : 153,817.80 = 66,158.77 : x
  2. Step 2: Convert to fraction form
    111,512.89/153,817.80 = 66,158.77/x
  3. Step 3: Cross multiply
    111,512.89x = 153,817.80 × 66,158.77
  4. Step 4: Simplify right side
    111,512.89x = 10,176,396,452.11
  5. Step 5: Solve for x
    x = 10,176,396,452.11/111,512.89
  6. Step 6: Final answer
    x = 91,257.58

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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.