Home / 103,403.09-155,181.83-76,810.48

Finding the Fourth Proportional to 103,403.09, 155,181.83 and 76,810.48

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Solution

The fourth proportional to 103,403.09, 155,181.83 and 76,810.48 is: 115,273.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,403.09 : 155,181.83 = 76,810.48 : x
  2. Step 2: Convert to fraction form
    103,403.09/155,181.83 = 76,810.48/x
  3. Step 3: Cross multiply
    103,403.09x = 155,181.83 × 76,810.48
  4. Step 4: Simplify right side
    103,403.09x = 11,919,590,849.58
  5. Step 5: Solve for x
    x = 11,919,590,849.58/103,403.09
  6. Step 6: Final answer
    x = 115,273.06

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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.