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Finding the Fourth Proportional to 111,590.40, 154,021.26 and 63,871.26

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Solution

The fourth proportional to 111,590.40, 154,021.26 and 63,871.26 is: 88,157.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,590.40 : 154,021.26 = 63,871.26 : x
  2. Step 2: Convert to fraction form
    111,590.40/154,021.26 = 63,871.26/x
  3. Step 3: Cross multiply
    111,590.40x = 154,021.26 × 63,871.26
  4. Step 4: Simplify right side
    111,590.40x = 9,837,531,942.99
  5. Step 5: Solve for x
    x = 9,837,531,942.99/111,590.40
  6. Step 6: Final answer
    x = 88,157.51

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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.