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Finding the Fourth Proportional to 100,263.94, 138,364.23 and 55,551.94

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Solution

The fourth proportional to 100,263.94, 138,364.23 and 55,551.94 is: 76,661.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,263.94 : 138,364.23 = 55,551.94 : x
  2. Step 2: Convert to fraction form
    100,263.94/138,364.23 = 55,551.94/x
  3. Step 3: Cross multiply
    100,263.94x = 138,364.23 × 55,551.94
  4. Step 4: Simplify right side
    100,263.94x = 7,686,401,265.52
  5. Step 5: Solve for x
    x = 7,686,401,265.52/100,263.94
  6. Step 6: Final answer
    x = 76,661.67

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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.