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Finding the Fourth Proportional to 154,054.56, 212,584.73 and 85,141.11

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Solution

The fourth proportional to 154,054.56, 212,584.73 and 85,141.11 is: 117,488.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,054.56 : 212,584.73 = 85,141.11 : x
  2. Step 2: Convert to fraction form
    154,054.56/212,584.73 = 85,141.11/x
  3. Step 3: Cross multiply
    154,054.56x = 212,584.73 × 85,141.11
  4. Step 4: Simplify right side
    154,054.56x = 18,099,699,455.54
  5. Step 5: Solve for x
    x = 18,099,699,455.54/154,054.56
  6. Step 6: Final answer
    x = 117,488.89

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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.