Home / 208,045.52-311,947.86-81,537.92

Finding the Fourth Proportional to 208,045.52, 311,947.86 and 81,537.92

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Solution

The fourth proportional to 208,045.52, 311,947.86 and 81,537.92 is: 122,259.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,045.52 : 311,947.86 = 81,537.92 : x
  2. Step 2: Convert to fraction form
    208,045.52/311,947.86 = 81,537.92/x
  3. Step 3: Cross multiply
    208,045.52x = 311,947.86 × 81,537.92
  4. Step 4: Simplify right side
    208,045.52x = 25,435,579,652.85
  5. Step 5: Solve for x
    x = 25,435,579,652.85/208,045.52
  6. Step 6: Final answer
    x = 122,259.68

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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.