Home / 82,085.26-122,534.32-72,120.74

Finding the Fourth Proportional to 82,085.26, 122,534.32 and 72,120.74

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Solution

The fourth proportional to 82,085.26, 122,534.32 and 72,120.74 is: 107,659.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,085.26 : 122,534.32 = 72,120.74 : x
  2. Step 2: Convert to fraction form
    82,085.26/122,534.32 = 72,120.74/x
  3. Step 3: Cross multiply
    82,085.26x = 122,534.32 × 72,120.74
  4. Step 4: Simplify right side
    82,085.26x = 8,837,265,833.80
  5. Step 5: Solve for x
    x = 8,837,265,833.80/82,085.26
  6. Step 6: Final answer
    x = 107,659.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.