Home / 104,789.12-144,288.76-78,985.16

Finding the Fourth Proportional to 104,789.12, 144,288.76 and 78,985.16

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Solution

The fourth proportional to 104,789.12, 144,288.76 and 78,985.16 is: 108,758.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,789.12 : 144,288.76 = 78,985.16 : x
  2. Step 2: Convert to fraction form
    104,789.12/144,288.76 = 78,985.16/x
  3. Step 3: Cross multiply
    104,789.12x = 144,288.76 × 78,985.16
  4. Step 4: Simplify right side
    104,789.12x = 11,396,670,958.06
  5. Step 5: Solve for x
    x = 11,396,670,958.06/104,789.12
  6. Step 6: Final answer
    x = 108,758.15

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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.