Home / 123,868.41-185,777-78,262.26

Finding the Fourth Proportional to 123,868.41, 185,777 and 78,262.26

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Solution

The fourth proportional to 123,868.41, 185,777 and 78,262.26 is: 117,377.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,868.41 : 185,777 = 78,262.26 : x
  2. Step 2: Convert to fraction form
    123,868.41/185,777 = 78,262.26/x
  3. Step 3: Cross multiply
    123,868.41x = 185,777 × 78,262.26
  4. Step 4: Simplify right side
    123,868.41x = 14,539,327,876.02
  5. Step 5: Solve for x
    x = 14,539,327,876.02/123,868.41
  6. Step 6: Final answer
    x = 117,377.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.