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Finding the Fourth Proportional to 236,159.73, 325,903.85 and 128,729.79

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Solution

The fourth proportional to 236,159.73, 325,903.85 and 128,729.79 is: 177,648.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,159.73 : 325,903.85 = 128,729.79 : x
  2. Step 2: Convert to fraction form
    236,159.73/325,903.85 = 128,729.79/x
  3. Step 3: Cross multiply
    236,159.73x = 325,903.85 × 128,729.79
  4. Step 4: Simplify right side
    236,159.73x = 41,953,533,527.04
  5. Step 5: Solve for x
    x = 41,953,533,527.04/236,159.73
  6. Step 6: Final answer
    x = 177,648.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.