Home / 100,239.75-138,330.86-55,527.75

Finding the Fourth Proportional to 100,239.75, 138,330.86 and 55,527.75

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Solution

The fourth proportional to 100,239.75, 138,330.86 and 55,527.75 is: 76,628.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,239.75 : 138,330.86 = 55,527.75 : x
  2. Step 2: Convert to fraction form
    100,239.75/138,330.86 = 55,527.75/x
  3. Step 3: Cross multiply
    100,239.75x = 138,330.86 × 55,527.75
  4. Step 4: Simplify right side
    100,239.75x = 7,681,201,133.73
  5. Step 5: Solve for x
    x = 7,681,201,133.73/100,239.75
  6. Step 6: Final answer
    x = 76,628.30

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1.5x scale

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.