Home / 149,313.18-206,053.40-81,330.42

Finding the Fourth Proportional to 149,313.18, 206,053.40 and 81,330.42

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Solution

The fourth proportional to 149,313.18, 206,053.40 and 81,330.42 is: 112,236.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,313.18 : 206,053.40 = 81,330.42 : x
  2. Step 2: Convert to fraction form
    149,313.18/206,053.40 = 81,330.42/x
  3. Step 3: Cross multiply
    149,313.18x = 206,053.40 × 81,330.42
  4. Step 4: Simplify right side
    149,313.18x = 16,758,409,564.43
  5. Step 5: Solve for x
    x = 16,758,409,564.43/149,313.18
  6. Step 6: Final answer
    x = 112,236.64

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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.