Home / 103,619.02-155,428.52-68,550.48

Finding the Fourth Proportional to 103,619.02, 155,428.52 and 68,550.48

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Solution

The fourth proportional to 103,619.02, 155,428.52 and 68,550.48 is: 102,825.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,619.02 : 155,428.52 = 68,550.48 : x
  2. Step 2: Convert to fraction form
    103,619.02/155,428.52 = 68,550.48/x
  3. Step 3: Cross multiply
    103,619.02x = 155,428.52 × 68,550.48
  4. Step 4: Simplify right side
    103,619.02x = 10,654,699,651.69
  5. Step 5: Solve for x
    x = 10,654,699,651.69/103,619.02
  6. Step 6: Final answer
    x = 102,825.71

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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.