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Finding the Fourth Proportional to 111,648, 167,428.26 and 45,075.72

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Solution

The fourth proportional to 111,648, 167,428.26 and 45,075.72 is: 67,595.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,648 : 167,428.26 = 45,075.72 : x
  2. Step 2: Convert to fraction form
    111,648/167,428.26 = 45,075.72/x
  3. Step 3: Cross multiply
    111,648x = 167,428.26 × 45,075.72
  4. Step 4: Simplify right side
    111,648x = 7,546,949,367.85
  5. Step 5: Solve for x
    x = 7,546,949,367.85/111,648
  6. Step 6: Final answer
    x = 67,595.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.