Home / 112,683.12-155,499.12-61,694.59

Finding the Fourth Proportional to 112,683.12, 155,499.12 and 61,694.59

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Solution

The fourth proportional to 112,683.12, 155,499.12 and 61,694.59 is: 85,136.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,683.12 : 155,499.12 = 61,694.59 : x
  2. Step 2: Convert to fraction form
    112,683.12/155,499.12 = 61,694.59/x
  3. Step 3: Cross multiply
    112,683.12x = 155,499.12 × 61,694.59
  4. Step 4: Simplify right side
    112,683.12x = 9,593,453,745.72
  5. Step 5: Solve for x
    x = 9,593,453,745.72/112,683.12
  6. Step 6: Final answer
    x = 85,136.56

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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.