Home / 103,917.31-155,917.14-54,028.87

Finding the Fourth Proportional to 103,917.31, 155,917.14 and 54,028.87

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Solution

The fourth proportional to 103,917.31, 155,917.14 and 54,028.87 is: 81,064.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,917.31 : 155,917.14 = 54,028.87 : x
  2. Step 2: Convert to fraction form
    103,917.31/155,917.14 = 54,028.87/x
  3. Step 3: Cross multiply
    103,917.31x = 155,917.14 × 54,028.87
  4. Step 4: Simplify right side
    103,917.31x = 8,424,026,887.83
  5. Step 5: Solve for x
    x = 8,424,026,887.83/103,917.31
  6. Step 6: Final answer
    x = 81,064.71

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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.