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Finding the Fourth Proportional to 192,762.48, 289,163.36 and 66,386.28

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Solution

The fourth proportional to 192,762.48, 289,163.36 and 66,386.28 is: 99,586.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,762.48 : 289,163.36 = 66,386.28 : x
  2. Step 2: Convert to fraction form
    192,762.48/289,163.36 = 66,386.28/x
  3. Step 3: Cross multiply
    192,762.48x = 289,163.36 × 66,386.28
  4. Step 4: Simplify right side
    192,762.48x = 19,196,479,782.70
  5. Step 5: Solve for x
    x = 19,196,479,782.70/192,762.48
  6. Step 6: Final answer
    x = 99,586.18

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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.