Home / 85,182.08-117,620.48-76,213.76

Finding the Fourth Proportional to 85,182.08, 117,620.48 and 76,213.76

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Solution

The fourth proportional to 85,182.08, 117,620.48 and 76,213.76 is: 105,236.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,182.08 : 117,620.48 = 76,213.76 : x
  2. Step 2: Convert to fraction form
    85,182.08/117,620.48 = 76,213.76/x
  3. Step 3: Cross multiply
    85,182.08x = 117,620.48 × 76,213.76
  4. Step 4: Simplify right side
    85,182.08x = 8,964,299,033.80
  5. Step 5: Solve for x
    x = 8,964,299,033.80/85,182.08
  6. Step 6: Final answer
    x = 105,236.91

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1.5x scale

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.