Home / 100,953.09-139,313.40-55,635.27

Finding the Fourth Proportional to 100,953.09, 139,313.40 and 55,635.27

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Solution

The fourth proportional to 100,953.09, 139,313.40 and 55,635.27 is: 76,775.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,953.09 : 139,313.40 = 55,635.27 : x
  2. Step 2: Convert to fraction form
    100,953.09/139,313.40 = 55,635.27/x
  3. Step 3: Cross multiply
    100,953.09x = 139,313.40 × 55,635.27
  4. Step 4: Simplify right side
    100,953.09x = 7,750,738,623.62
  5. Step 5: Solve for x
    x = 7,750,738,623.62/100,953.09
  6. Step 6: Final answer
    x = 76,775.65

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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.