Home / 111,984.12-154,538.04-61,683.12

Finding the Fourth Proportional to 111,984.12, 154,538.04 and 61,683.12

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Solution

The fourth proportional to 111,984.12, 154,538.04 and 61,683.12 is: 85,122.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,984.12 : 154,538.04 = 61,683.12 : x
  2. Step 2: Convert to fraction form
    111,984.12/154,538.04 = 61,683.12/x
  3. Step 3: Cross multiply
    111,984.12x = 154,538.04 × 61,683.12
  4. Step 4: Simplify right side
    111,984.12x = 9,532,388,465.88
  5. Step 5: Solve for x
    x = 9,532,388,465.88/111,984.12
  6. Step 6: Final answer
    x = 85,122.68

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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.