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Finding the Fourth Proportional to 131,627, 181,645.26 and 71,197.64

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Solution

The fourth proportional to 131,627, 181,645.26 and 71,197.64 is: 98,252.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,627 : 181,645.26 = 71,197.64 : x
  2. Step 2: Convert to fraction form
    131,627/181,645.26 = 71,197.64/x
  3. Step 3: Cross multiply
    131,627x = 181,645.26 × 71,197.64
  4. Step 4: Simplify right side
    131,627x = 12,932,713,829.19
  5. Step 5: Solve for x
    x = 12,932,713,829.19/131,627
  6. Step 6: Final answer
    x = 98,252.74

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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.