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Finding the Fourth Proportional to 208,079.96, 312,133.77 and 73,127.70

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Solution

The fourth proportional to 208,079.96, 312,133.77 and 73,127.70 is: 109,696.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,079.96 : 312,133.77 = 73,127.70 : x
  2. Step 2: Convert to fraction form
    208,079.96/312,133.77 = 73,127.70/x
  3. Step 3: Cross multiply
    208,079.96x = 312,133.77 × 73,127.70
  4. Step 4: Simplify right side
    208,079.96x = 22,825,624,692.43
  5. Step 5: Solve for x
    x = 22,825,624,692.43/208,079.96
  6. Step 6: Final answer
    x = 109,696.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.