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Finding the Fourth Proportional to 154,594.56, 213,357.69 and 86,622.60

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Solution

The fourth proportional to 154,594.56, 213,357.69 and 86,622.60 is: 119,548.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,594.56 : 213,357.69 = 86,622.60 : x
  2. Step 2: Convert to fraction form
    154,594.56/213,357.69 = 86,622.60/x
  3. Step 3: Cross multiply
    154,594.56x = 213,357.69 × 86,622.60
  4. Step 4: Simplify right side
    154,594.56x = 18,481,597,837.79
  5. Step 5: Solve for x
    x = 18,481,597,837.79/154,594.56
  6. Step 6: Final answer
    x = 119,548.82

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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.