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Finding the Fourth Proportional to 144,573.56, 216,989.94 and 121,028.48

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Solution

The fourth proportional to 144,573.56, 216,989.94 and 121,028.48 is: 181,651.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,573.56 : 216,989.94 = 121,028.48 : x
  2. Step 2: Convert to fraction form
    144,573.56/216,989.94 = 121,028.48/x
  3. Step 3: Cross multiply
    144,573.56x = 216,989.94 × 121,028.48
  4. Step 4: Simplify right side
    144,573.56x = 26,261,962,613.49
  5. Step 5: Solve for x
    x = 26,261,962,613.49/144,573.56
  6. Step 6: Final answer
    x = 181,651.21

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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.