Home / 111,977.20-154,539.44-83,633.68

Finding the Fourth Proportional to 111,977.20, 154,539.44 and 83,633.68

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Solution

The fourth proportional to 111,977.20, 154,539.44 and 83,633.68 is: 115,422.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,977.20 : 154,539.44 = 83,633.68 : x
  2. Step 2: Convert to fraction form
    111,977.20/154,539.44 = 83,633.68/x
  3. Step 3: Cross multiply
    111,977.20x = 154,539.44 × 83,633.68
  4. Step 4: Simplify right side
    111,977.20x = 12,924,702,072.34
  5. Step 5: Solve for x
    x = 12,924,702,072.34/111,977.20
  6. Step 6: Final answer
    x = 115,422.62

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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.