Home / 100,790.52-139,096.68-57,777.18

Finding the Fourth Proportional to 100,790.52, 139,096.68 and 57,777.18

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Solution

The fourth proportional to 100,790.52, 139,096.68 and 57,777.18 is: 79,735.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,790.52 : 139,096.68 = 57,777.18 : x
  2. Step 2: Convert to fraction form
    100,790.52/139,096.68 = 57,777.18/x
  3. Step 3: Cross multiply
    100,790.52x = 139,096.68 × 57,777.18
  4. Step 4: Simplify right side
    100,790.52x = 8,036,613,917.76
  5. Step 5: Solve for x
    x = 8,036,613,917.76/100,790.52
  6. Step 6: Final answer
    x = 79,735.81

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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.