Home / 154,964.96-213,834-86,972.72

Finding the Fourth Proportional to 154,964.96, 213,834 and 86,972.72

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Solution

The fourth proportional to 154,964.96, 213,834 and 86,972.72 is: 120,012.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,964.96 : 213,834 = 86,972.72 : x
  2. Step 2: Convert to fraction form
    154,964.96/213,834 = 86,972.72/x
  3. Step 3: Cross multiply
    154,964.96x = 213,834 × 86,972.72
  4. Step 4: Simplify right side
    154,964.96x = 18,597,724,608.48
  5. Step 5: Solve for x
    x = 18,597,724,608.48/154,964.96
  6. Step 6: Final answer
    x = 120,012.45

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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.