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Finding the Fourth Proportional to 147,361.88, 203,347.26 and 86,935.07

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Solution

The fourth proportional to 147,361.88, 203,347.26 and 86,935.07 is: 119,963.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,361.88 : 203,347.26 = 86,935.07 : x
  2. Step 2: Convert to fraction form
    147,361.88/203,347.26 = 86,935.07/x
  3. Step 3: Cross multiply
    147,361.88x = 203,347.26 × 86,935.07
  4. Step 4: Simplify right side
    147,361.88x = 17,678,008,790.78
  5. Step 5: Solve for x
    x = 17,678,008,790.78/147,361.88
  6. Step 6: Final answer
    x = 119,963.24

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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.