Home / 149,719.09-206,615.48-81,738.93

Finding the Fourth Proportional to 149,719.09, 206,615.48 and 81,738.93

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Solution

The fourth proportional to 149,719.09, 206,615.48 and 81,738.93 is: 112,801.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,719.09 : 206,615.48 = 81,738.93 : x
  2. Step 2: Convert to fraction form
    149,719.09/206,615.48 = 81,738.93/x
  3. Step 3: Cross multiply
    149,719.09x = 206,615.48 × 81,738.93
  4. Step 4: Simplify right side
    149,719.09x = 16,888,528,041.64
  5. Step 5: Solve for x
    x = 16,888,528,041.64/149,719.09
  6. Step 6: Final answer
    x = 112,801.43

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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.