Home / 211,840.75-317,732.82-78,702.85

Finding the Fourth Proportional to 211,840.75, 317,732.82 and 78,702.85

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Solution

The fourth proportional to 211,840.75, 317,732.82 and 78,702.85 is: 118,043.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,840.75 : 317,732.82 = 78,702.85 : x
  2. Step 2: Convert to fraction form
    211,840.75/317,732.82 = 78,702.85/x
  3. Step 3: Cross multiply
    211,840.75x = 317,732.82 × 78,702.85
  4. Step 4: Simplify right side
    211,840.75x = 25,006,478,472.54
  5. Step 5: Solve for x
    x = 25,006,478,472.54/211,840.75
  6. Step 6: Final answer
    x = 118,043.76

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1.5x scale

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.