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Finding the Fourth Proportional to 111,245.69, 153,476.68 and 82,243.70

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Solution

The fourth proportional to 111,245.69, 153,476.68 and 82,243.70 is: 113,464.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,245.69 : 153,476.68 = 82,243.70 : x
  2. Step 2: Convert to fraction form
    111,245.69/153,476.68 = 82,243.70/x
  3. Step 3: Cross multiply
    111,245.69x = 153,476.68 × 82,243.70
  4. Step 4: Simplify right side
    111,245.69x = 12,622,490,026.92
  5. Step 5: Solve for x
    x = 12,622,490,026.92/111,245.69
  6. Step 6: Final answer
    x = 113,464.98

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1.5x scale

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.