Home / 81,702.14-122,176.97-77,716.33

Finding the Fourth Proportional to 81,702.14, 122,176.97 and 77,716.33

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Solution

The fourth proportional to 81,702.14, 122,176.97 and 77,716.33 is: 116,216.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,702.14 : 122,176.97 = 77,716.33 : x
  2. Step 2: Convert to fraction form
    81,702.14/122,176.97 = 77,716.33/x
  3. Step 3: Cross multiply
    81,702.14x = 122,176.97 × 77,716.33
  4. Step 4: Simplify right side
    81,702.14x = 9,495,145,718.92
  5. Step 5: Solve for x
    x = 9,495,145,718.92/81,702.14
  6. Step 6: Final answer
    x = 116,216.61

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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.