Home / 103,446.06-142,761.68-77,907.38

Finding the Fourth Proportional to 103,446.06, 142,761.68 and 77,907.38

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Solution

The fourth proportional to 103,446.06, 142,761.68 and 77,907.38 is: 107,516.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,446.06 : 142,761.68 = 77,907.38 : x
  2. Step 2: Convert to fraction form
    103,446.06/142,761.68 = 77,907.38/x
  3. Step 3: Cross multiply
    103,446.06x = 142,761.68 × 77,907.38
  4. Step 4: Simplify right side
    103,446.06x = 11,122,187,349.85
  5. Step 5: Solve for x
    x = 11,122,187,349.85/103,446.06
  6. Step 6: Final answer
    x = 107,516.78

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.