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Finding the Fourth Proportional to 208,077.20, 312,000.60 and 67,763.60

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Solution

The fourth proportional to 208,077.20, 312,000.60 and 67,763.60 is: 101,607.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,077.20 : 312,000.60 = 67,763.60 : x
  2. Step 2: Convert to fraction form
    208,077.20/312,000.60 = 67,763.60/x
  3. Step 3: Cross multiply
    208,077.20x = 312,000.60 × 67,763.60
  4. Step 4: Simplify right side
    208,077.20x = 21,142,283,858.16
  5. Step 5: Solve for x
    x = 21,142,283,858.16/208,077.20
  6. Step 6: Final answer
    x = 101,607.88

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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.