Home / 100,933.42-139,382.34-63,273.28

Finding the Fourth Proportional to 100,933.42, 139,382.34 and 63,273.28

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Solution

The fourth proportional to 100,933.42, 139,382.34 and 63,273.28 is: 87,376.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,933.42 : 139,382.34 = 63,273.28 : x
  2. Step 2: Convert to fraction form
    100,933.42/139,382.34 = 63,273.28/x
  3. Step 3: Cross multiply
    100,933.42x = 139,382.34 × 63,273.28
  4. Step 4: Simplify right side
    100,933.42x = 8,819,177,825.88
  5. Step 5: Solve for x
    x = 8,819,177,825.88/100,933.42
  6. Step 6: Final answer
    x = 87,376.19

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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.