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Finding the Fourth Proportional to 192,707.56, 289,032.54 and 66,367.72

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Solution

The fourth proportional to 192,707.56, 289,032.54 and 66,367.72 is: 99,541.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,707.56 : 289,032.54 = 66,367.72 : x
  2. Step 2: Convert to fraction form
    192,707.56/289,032.54 = 66,367.72/x
  3. Step 3: Cross multiply
    192,707.56x = 289,032.54 × 66,367.72
  4. Step 4: Simplify right side
    192,707.56x = 19,182,430,685.61
  5. Step 5: Solve for x
    x = 19,182,430,685.61/192,707.56
  6. Step 6: Final answer
    x = 99,541.66

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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.