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Finding the Fourth Proportional to 111,671.27, 154,119.45 and 66,349.62

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Solution

The fourth proportional to 111,671.27, 154,119.45 and 66,349.62 is: 91,570.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,671.27 : 154,119.45 = 66,349.62 : x
  2. Step 2: Convert to fraction form
    111,671.27/154,119.45 = 66,349.62/x
  3. Step 3: Cross multiply
    111,671.27x = 154,119.45 × 66,349.62
  4. Step 4: Simplify right side
    111,671.27x = 10,225,766,942.11
  5. Step 5: Solve for x
    x = 10,225,766,942.11/111,671.27
  6. Step 6: Final answer
    x = 91,570.26

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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.