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Finding the Fourth Proportional to 236,073.20, 325,781.02 and 128,643.20

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Solution

The fourth proportional to 236,073.20, 325,781.02 and 128,643.20 is: 177,527.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,073.20 : 325,781.02 = 128,643.20 : x
  2. Step 2: Convert to fraction form
    236,073.20/325,781.02 = 128,643.20/x
  3. Step 3: Cross multiply
    236,073.20x = 325,781.02 × 128,643.20
  4. Step 4: Simplify right side
    236,073.20x = 41,909,512,665.64
  5. Step 5: Solve for x
    x = 41,909,512,665.64/236,073.20
  6. Step 6: Final answer
    x = 177,527.62

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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.