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Finding the Fourth Proportional to 111,848.58, 154,408.21 and 86,297.54

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Solution

The fourth proportional to 111,848.58, 154,408.21 and 86,297.54 is: 119,134.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,848.58 : 154,408.21 = 86,297.54 : x
  2. Step 2: Convert to fraction form
    111,848.58/154,408.21 = 86,297.54/x
  3. Step 3: Cross multiply
    111,848.58x = 154,408.21 × 86,297.54
  4. Step 4: Simplify right side
    111,848.58x = 13,325,047,691.02
  5. Step 5: Solve for x
    x = 13,325,047,691.02/111,848.58
  6. Step 6: Final answer
    x = 119,134.71

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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.