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Finding the Fourth Proportional to 102,361.62, 141,263.37 and 57,039.63

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Solution

The fourth proportional to 102,361.62, 141,263.37 and 57,039.63 is: 78,717.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,361.62 : 141,263.37 = 57,039.63 : x
  2. Step 2: Convert to fraction form
    102,361.62/141,263.37 = 57,039.63/x
  3. Step 3: Cross multiply
    102,361.62x = 141,263.37 × 57,039.63
  4. Step 4: Simplify right side
    102,361.62x = 8,057,610,357.35
  5. Step 5: Solve for x
    x = 8,057,610,357.35/102,361.62
  6. Step 6: Final answer
    x = 78,717.10

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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.