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Finding the Fourth Proportional to 154,693.83, 213,429.56 and 86,701.37

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Solution

The fourth proportional to 154,693.83, 213,429.56 and 86,701.37 is: 119,621.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,693.83 : 213,429.56 = 86,701.37 : x
  2. Step 2: Convert to fraction form
    154,693.83/213,429.56 = 86,701.37/x
  3. Step 3: Cross multiply
    154,693.83x = 213,429.56 × 86,701.37
  4. Step 4: Simplify right side
    154,693.83x = 18,504,633,749.84
  5. Step 5: Solve for x
    x = 18,504,633,749.84/154,693.83
  6. Step 6: Final answer
    x = 119,621.02

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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.