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Finding the Fourth Proportional to 147,797.40, 203,960.40 and 80,729.40

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Solution

The fourth proportional to 147,797.40, 203,960.40 and 80,729.40 is: 111,406.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,797.40 : 203,960.40 = 80,729.40 : x
  2. Step 2: Convert to fraction form
    147,797.40/203,960.40 = 80,729.40/x
  3. Step 3: Cross multiply
    147,797.40x = 203,960.40 × 80,729.40
  4. Step 4: Simplify right side
    147,797.40x = 16,465,600,715.76
  5. Step 5: Solve for x
    x = 16,465,600,715.76/147,797.40
  6. Step 6: Final answer
    x = 111,406.57

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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.