Home / 149,668.46-206,543.09-81,686.87

Finding the Fourth Proportional to 149,668.46, 206,543.09 and 81,686.87

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Solution

The fourth proportional to 149,668.46, 206,543.09 and 81,686.87 is: 112,728.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,668.46 : 206,543.09 = 81,686.87 : x
  2. Step 2: Convert to fraction form
    149,668.46/206,543.09 = 81,686.87/x
  3. Step 3: Cross multiply
    149,668.46x = 206,543.09 × 81,686.87
  4. Step 4: Simplify right side
    149,668.46x = 16,871,858,542.23
  5. Step 5: Solve for x
    x = 16,871,858,542.23/149,668.46
  6. Step 6: Final answer
    x = 112,728.22

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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.