Home / 89,231.23-133,583.87-78,159.54

Finding the Fourth Proportional to 89,231.23, 133,583.87 and 78,159.54

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Solution

The fourth proportional to 89,231.23, 133,583.87 and 78,159.54 is: 117,008.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,231.23 : 133,583.87 = 78,159.54 : x
  2. Step 2: Convert to fraction form
    89,231.23/133,583.87 = 78,159.54/x
  3. Step 3: Cross multiply
    89,231.23x = 133,583.87 × 78,159.54
  4. Step 4: Simplify right side
    89,231.23x = 10,440,853,439.82
  5. Step 5: Solve for x
    x = 10,440,853,439.82/89,231.23
  6. Step 6: Final answer
    x = 117,008.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.