Home / 103,299.06-142,553.82-57,361.74

Finding the Fourth Proportional to 103,299.06, 142,553.82 and 57,361.74

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Solution

The fourth proportional to 103,299.06, 142,553.82 and 57,361.74 is: 79,159.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,299.06 : 142,553.82 = 57,361.74 : x
  2. Step 2: Convert to fraction form
    103,299.06/142,553.82 = 57,361.74/x
  3. Step 3: Cross multiply
    103,299.06x = 142,553.82 × 57,361.74
  4. Step 4: Simplify right side
    103,299.06x = 8,177,135,158.85
  5. Step 5: Solve for x
    x = 8,177,135,158.85/103,299.06
  6. Step 6: Final answer
    x = 79,159.82

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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.