Home / 104,789.26-144,288.95-78,985.31

Finding the Fourth Proportional to 104,789.26, 144,288.95 and 78,985.31

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Solution

The fourth proportional to 104,789.26, 144,288.95 and 78,985.31 is: 108,758.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,789.26 : 144,288.95 = 78,985.31 : x
  2. Step 2: Convert to fraction form
    104,789.26/144,288.95 = 78,985.31/x
  3. Step 3: Cross multiply
    104,789.26x = 144,288.95 × 78,985.31
  4. Step 4: Simplify right side
    104,789.26x = 11,396,707,411.12
  5. Step 5: Solve for x
    x = 11,396,707,411.12/104,789.26
  6. Step 6: Final answer
    x = 108,758.36

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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.