Home / 103,815.65-155,619.80-51,262.85

Finding the Fourth Proportional to 103,815.65, 155,619.80 and 51,262.85

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Solution

The fourth proportional to 103,815.65, 155,619.80 and 51,262.85 is: 76,843.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,815.65 : 155,619.80 = 51,262.85 : x
  2. Step 2: Convert to fraction form
    103,815.65/155,619.80 = 51,262.85/x
  3. Step 3: Cross multiply
    103,815.65x = 155,619.80 × 51,262.85
  4. Step 4: Simplify right side
    103,815.65x = 7,977,514,208.12
  5. Step 5: Solve for x
    x = 7,977,514,208.12/103,815.65
  6. Step 6: Final answer
    x = 76,843.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.