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Finding the Fourth Proportional to 207,161.42, 285,904.71 and 126,636.08

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Solution

The fourth proportional to 207,161.42, 285,904.71 and 126,636.08 is: 174,771.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,161.42 : 285,904.71 = 126,636.08 : x
  2. Step 2: Convert to fraction form
    207,161.42/285,904.71 = 126,636.08/x
  3. Step 3: Cross multiply
    207,161.42x = 285,904.71 × 126,636.08
  4. Step 4: Simplify right side
    207,161.42x = 36,205,850,298.41
  5. Step 5: Solve for x
    x = 36,205,850,298.41/207,161.42
  6. Step 6: Final answer
    x = 174,771.21

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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.