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Finding the Fourth Proportional to 101,663.51, 140,262.03 and 61,361.96

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Solution

The fourth proportional to 101,663.51, 140,262.03 and 61,361.96 is: 84,659.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,663.51 : 140,262.03 = 61,361.96 : x
  2. Step 2: Convert to fraction form
    101,663.51/140,262.03 = 61,361.96/x
  3. Step 3: Cross multiply
    101,663.51x = 140,262.03 × 61,361.96
  4. Step 4: Simplify right side
    101,663.51x = 8,606,752,373.07
  5. Step 5: Solve for x
    x = 8,606,752,373.07/101,663.51
  6. Step 6: Final answer
    x = 84,659.21

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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.