Home / 110,907.10-166,069.05-81,163.90

Finding the Fourth Proportional to 110,907.10, 166,069.05 and 81,163.90

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Solution

The fourth proportional to 110,907.10, 166,069.05 and 81,163.90 is: 121,532.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,907.10 : 166,069.05 = 81,163.90 : x
  2. Step 2: Convert to fraction form
    110,907.10/166,069.05 = 81,163.90/x
  3. Step 3: Cross multiply
    110,907.10x = 166,069.05 × 81,163.90
  4. Step 4: Simplify right side
    110,907.10x = 13,478,811,767.30
  5. Step 5: Solve for x
    x = 13,478,811,767.30/110,907.10
  6. Step 6: Final answer
    x = 121,532.45

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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.