Home / 149,866.06-206,812.74-81,881.57

Finding the Fourth Proportional to 149,866.06, 206,812.74 and 81,881.57

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Solution

The fourth proportional to 149,866.06, 206,812.74 and 81,881.57 is: 112,995.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,866.06 : 206,812.74 = 81,881.57 : x
  2. Step 2: Convert to fraction form
    149,866.06/206,812.74 = 81,881.57/x
  3. Step 3: Cross multiply
    149,866.06x = 206,812.74 × 81,881.57
  4. Step 4: Simplify right side
    149,866.06x = 16,934,151,847.20
  5. Step 5: Solve for x
    x = 16,934,151,847.20/149,866.06
  6. Step 6: Final answer
    x = 112,995.24

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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.