Home / 89,938-123,999.06-73,745.65

Finding the Fourth Proportional to 89,938, 123,999.06 and 73,745.65

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Solution

The fourth proportional to 89,938, 123,999.06 and 73,745.65 is: 101,674.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,938 : 123,999.06 = 73,745.65 : x
  2. Step 2: Convert to fraction form
    89,938/123,999.06 = 73,745.65/x
  3. Step 3: Cross multiply
    89,938x = 123,999.06 × 73,745.65
  4. Step 4: Simplify right side
    89,938x = 9,144,391,279.09
  5. Step 5: Solve for x
    x = 9,144,391,279.09/89,938
  6. Step 6: Final answer
    x = 101,674.39

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1.5x scale

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.