Home / 102,912.96-142,021.44-57,593.28

Finding the Fourth Proportional to 102,912.96, 142,021.44 and 57,593.28

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Solution

The fourth proportional to 102,912.96, 142,021.44 and 57,593.28 is: 79,479.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,912.96 : 142,021.44 = 57,593.28 : x
  2. Step 2: Convert to fraction form
    102,912.96/142,021.44 = 57,593.28/x
  3. Step 3: Cross multiply
    102,912.96x = 142,021.44 × 57,593.28
  4. Step 4: Simplify right side
    102,912.96x = 8,179,480,559.92
  5. Step 5: Solve for x
    x = 8,179,480,559.92/102,912.96
  6. Step 6: Final answer
    x = 79,479.60

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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.