Home / 208,078.55-312,120.47-73,137.17

Finding the Fourth Proportional to 208,078.55, 312,120.47 and 73,137.17

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Solution

The fourth proportional to 208,078.55, 312,120.47 and 73,137.17 is: 109,706.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,078.55 : 312,120.47 = 73,137.17 : x
  2. Step 2: Convert to fraction form
    208,078.55/312,120.47 = 73,137.17/x
  3. Step 3: Cross multiply
    208,078.55x = 312,120.47 × 73,137.17
  4. Step 4: Simplify right side
    208,078.55x = 22,827,607,874.87
  5. Step 5: Solve for x
    x = 22,827,607,874.87/208,078.55
  6. Step 6: Final answer
    x = 109,706.68

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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.