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Finding the Fourth Proportional to 98,474.50, 146,943.23 and 87,871.60

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Solution

The fourth proportional to 98,474.50, 146,943.23 and 87,871.60 is: 131,121.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,474.50 : 146,943.23 = 87,871.60 : x
  2. Step 2: Convert to fraction form
    98,474.50/146,943.23 = 87,871.60/x
  3. Step 3: Cross multiply
    98,474.50x = 146,943.23 × 87,871.60
  4. Step 4: Simplify right side
    98,474.50x = 12,912,136,729.27
  5. Step 5: Solve for x
    x = 12,912,136,729.27/98,474.50
  6. Step 6: Final answer
    x = 131,121.63

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.