Home / 112,861.38-155,745.33-61,872.37

Finding the Fourth Proportional to 112,861.38, 155,745.33 and 61,872.37

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Solution

The fourth proportional to 112,861.38, 155,745.33 and 61,872.37 is: 85,382.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,861.38 : 155,745.33 = 61,872.37 : x
  2. Step 2: Convert to fraction form
    112,861.38/155,745.33 = 61,872.37/x
  3. Step 3: Cross multiply
    112,861.38x = 155,745.33 × 61,872.37
  4. Step 4: Simplify right side
    112,861.38x = 9,636,331,904.81
  5. Step 5: Solve for x
    x = 9,636,331,904.81/112,861.38
  6. Step 6: Final answer
    x = 85,382.01

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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.