Home / 208,058.10-312,087.15-74,942.70

Finding the Fourth Proportional to 208,058.10, 312,087.15 and 74,942.70

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Solution

The fourth proportional to 208,058.10, 312,087.15 and 74,942.70 is: 112,414.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,058.10 : 312,087.15 = 74,942.70 : x
  2. Step 2: Convert to fraction form
    208,058.10/312,087.15 = 74,942.70/x
  3. Step 3: Cross multiply
    208,058.10x = 312,087.15 × 74,942.70
  4. Step 4: Simplify right side
    208,058.10x = 23,388,653,656.31
  5. Step 5: Solve for x
    x = 23,388,653,656.31/208,058.10
  6. Step 6: Final answer
    x = 112,414.05

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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.