Home / 112,896.88-155,791.20-61,899.76

Finding the Fourth Proportional to 112,896.88, 155,791.20 and 61,899.76

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Solution

The fourth proportional to 112,896.88, 155,791.20 and 61,899.76 is: 85,418.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,896.88 : 155,791.20 = 61,899.76 : x
  2. Step 2: Convert to fraction form
    112,896.88/155,791.20 = 61,899.76/x
  3. Step 3: Cross multiply
    112,896.88x = 155,791.20 × 61,899.76
  4. Step 4: Simplify right side
    112,896.88x = 9,643,437,890.11
  5. Step 5: Solve for x
    x = 9,643,437,890.11/112,896.88
  6. Step 6: Final answer
    x = 85,418.11

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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.