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Finding the Fourth Proportional to 197,490, 272,536.38 and 108,066

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Solution

The fourth proportional to 197,490, 272,536.38 and 108,066 is: 149,131.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,490 : 272,536.38 = 108,066 : x
  2. Step 2: Convert to fraction form
    197,490/272,536.38 = 108,066/x
  3. Step 3: Cross multiply
    197,490x = 272,536.38 × 108,066
  4. Step 4: Simplify right side
    197,490x = 29,451,916,441.08
  5. Step 5: Solve for x
    x = 29,451,916,441.08/197,490
  6. Step 6: Final answer
    x = 149,131.18

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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.