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Finding the Fourth Proportional to 188,212.64, 259,733.90 and 103,335.18

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Solution

The fourth proportional to 188,212.64, 259,733.90 and 103,335.18 is: 142,602.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,212.64 : 259,733.90 = 103,335.18 : x
  2. Step 2: Convert to fraction form
    188,212.64/259,733.90 = 103,335.18/x
  3. Step 3: Cross multiply
    188,212.64x = 259,733.90 × 103,335.18
  4. Step 4: Simplify right side
    188,212.64x = 26,839,649,308.60
  5. Step 5: Solve for x
    x = 26,839,649,308.60/188,212.64
  6. Step 6: Final answer
    x = 142,602.80

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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.