Home / 208,129.73-312,003.23-74,977.43

Finding the Fourth Proportional to 208,129.73, 312,003.23 and 74,977.43

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Solution

The fourth proportional to 208,129.73, 312,003.23 and 74,977.43 is: 112,397.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,129.73 : 312,003.23 = 74,977.43 : x
  2. Step 2: Convert to fraction form
    208,129.73/312,003.23 = 74,977.43/x
  3. Step 3: Cross multiply
    208,129.73x = 312,003.23 × 74,977.43
  4. Step 4: Simplify right side
    208,129.73x = 23,393,200,337.10
  5. Step 5: Solve for x
    x = 23,393,200,337.10/208,129.73
  6. Step 6: Final answer
    x = 112,397.21

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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.