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Finding the Fourth Proportional to 100,888.44, 139,224.74 and 55,565.56

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Solution

The fourth proportional to 100,888.44, 139,224.74 and 55,565.56 is: 76,679.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,888.44 : 139,224.74 = 55,565.56 : x
  2. Step 2: Convert to fraction form
    100,888.44/139,224.74 = 55,565.56/x
  3. Step 3: Cross multiply
    100,888.44x = 139,224.74 × 55,565.56
  4. Step 4: Simplify right side
    100,888.44x = 7,736,100,643.95
  5. Step 5: Solve for x
    x = 7,736,100,643.95/100,888.44
  6. Step 6: Final answer
    x = 76,679.75

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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.