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Finding the Fourth Proportional to 147,772.71, 203,931.23 and 80,704.71

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Solution

The fourth proportional to 147,772.71, 203,931.23 and 80,704.71 is: 111,375.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,772.71 : 203,931.23 = 80,704.71 : x
  2. Step 2: Convert to fraction form
    147,772.71/203,931.23 = 80,704.71/x
  3. Step 3: Cross multiply
    147,772.71x = 203,931.23 × 80,704.71
  4. Step 4: Simplify right side
    147,772.71x = 16,458,210,373.57
  5. Step 5: Solve for x
    x = 16,458,210,373.57/147,772.71
  6. Step 6: Final answer
    x = 111,375.17

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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.