Home / 208,129.69-312,003.18-74,977.39

Finding the Fourth Proportional to 208,129.69, 312,003.18 and 74,977.39

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Solution

The fourth proportional to 208,129.69, 312,003.18 and 74,977.39 is: 112,397.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,129.69 : 312,003.18 = 74,977.39 : x
  2. Step 2: Convert to fraction form
    208,129.69/312,003.18 = 74,977.39/x
  3. Step 3: Cross multiply
    208,129.69x = 312,003.18 × 74,977.39
  4. Step 4: Simplify right side
    208,129.69x = 23,393,183,046.93
  5. Step 5: Solve for x
    x = 23,393,183,046.93/208,129.69
  6. Step 6: Final answer
    x = 112,397.14

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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.