Home / 208,276.34-312,349.94-75,139.30

Finding the Fourth Proportional to 208,276.34, 312,349.94 and 75,139.30

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Solution

The fourth proportional to 208,276.34, 312,349.94 and 75,139.30 is: 112,685.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,276.34 : 312,349.94 = 75,139.30 : x
  2. Step 2: Convert to fraction form
    208,276.34/312,349.94 = 75,139.30/x
  3. Step 3: Cross multiply
    208,276.34x = 312,349.94 × 75,139.30
  4. Step 4: Simplify right side
    208,276.34x = 23,469,755,846.64
  5. Step 5: Solve for x
    x = 23,469,755,846.64/208,276.34
  6. Step 6: Final answer
    x = 112,685.66

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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.