Home / 208,140.82-287,234.33-112,647.51

Finding the Fourth Proportional to 208,140.82, 287,234.33 and 112,647.51

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Solution

The fourth proportional to 208,140.82, 287,234.33 and 112,647.51 is: 155,453.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,140.82 : 287,234.33 = 112,647.51 : x
  2. Step 2: Convert to fraction form
    208,140.82/287,234.33 = 112,647.51/x
  3. Step 3: Cross multiply
    208,140.82x = 287,234.33 × 112,647.51
  4. Step 4: Simplify right side
    208,140.82x = 32,356,231,497.78
  5. Step 5: Solve for x
    x = 32,356,231,497.78/208,140.82
  6. Step 6: Final answer
    x = 155,453.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.