Home / 111,651.04-154,078.40-61,353.28

Finding the Fourth Proportional to 111,651.04, 154,078.40 and 61,353.28

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Solution

The fourth proportional to 111,651.04, 154,078.40 and 61,353.28 is: 84,667.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,651.04 : 154,078.40 = 61,353.28 : x
  2. Step 2: Convert to fraction form
    111,651.04/154,078.40 = 61,353.28/x
  3. Step 3: Cross multiply
    111,651.04x = 154,078.40 × 61,353.28
  4. Step 4: Simplify right side
    111,651.04x = 9,453,215,217.15
  5. Step 5: Solve for x
    x = 9,453,215,217.15/111,651.04
  6. Step 6: Final answer
    x = 84,667.51

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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.