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Finding the Fourth Proportional to 236,086.68, 325,795.32 and 128,657.64

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Solution

The fourth proportional to 236,086.68, 325,795.32 and 128,657.64 is: 177,545.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,086.68 : 325,795.32 = 128,657.64 : x
  2. Step 2: Convert to fraction form
    236,086.68/325,795.32 = 128,657.64/x
  3. Step 3: Cross multiply
    236,086.68x = 325,795.32 × 128,657.64
  4. Step 4: Simplify right side
    236,086.68x = 41,916,056,994.24
  5. Step 5: Solve for x
    x = 41,916,056,994.24/236,086.68
  6. Step 6: Final answer
    x = 177,545.20

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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.