Home / 149,663.43-206,538.21-81,681.03

Finding the Fourth Proportional to 149,663.43, 206,538.21 and 81,681.03

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Solution

The fourth proportional to 149,663.43, 206,538.21 and 81,681.03 is: 112,721.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,663.43 : 206,538.21 = 81,681.03 : x
  2. Step 2: Convert to fraction form
    149,663.43/206,538.21 = 81,681.03/x
  3. Step 3: Cross multiply
    149,663.43x = 206,538.21 × 81,681.03
  4. Step 4: Simplify right side
    149,663.43x = 16,870,253,727.16
  5. Step 5: Solve for x
    x = 16,870,253,727.16/149,663.43
  6. Step 6: Final answer
    x = 112,721.28

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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.