Home / 148,949.64-205,554.46-80,971.20

Finding the Fourth Proportional to 148,949.64, 205,554.46 and 80,971.20

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Solution

The fourth proportional to 148,949.64, 205,554.46 and 80,971.20 is: 111,742.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,949.64 : 205,554.46 = 80,971.20 : x
  2. Step 2: Convert to fraction form
    148,949.64/205,554.46 = 80,971.20/x
  3. Step 3: Cross multiply
    148,949.64x = 205,554.46 × 80,971.20
  4. Step 4: Simplify right side
    148,949.64x = 16,643,991,291.55
  5. Step 5: Solve for x
    x = 16,643,991,291.55/148,949.64
  6. Step 6: Final answer
    x = 111,742.41

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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.