Home / 149,865.56-206,812.05-81,881.07

Finding the Fourth Proportional to 149,865.56, 206,812.05 and 81,881.07

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Solution

The fourth proportional to 149,865.56, 206,812.05 and 81,881.07 is: 112,994.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,865.56 : 206,812.05 = 81,881.07 : x
  2. Step 2: Convert to fraction form
    149,865.56/206,812.05 = 81,881.07/x
  3. Step 3: Cross multiply
    149,865.56x = 206,812.05 × 81,881.07
  4. Step 4: Simplify right side
    149,865.56x = 16,933,991,942.89
  5. Step 5: Solve for x
    x = 16,933,991,942.89/149,865.56
  6. Step 6: Final answer
    x = 112,994.55

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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.