Home / 85,112.43-117,505.45-75,653.65

Finding the Fourth Proportional to 85,112.43, 117,505.45 and 75,653.65

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Solution

The fourth proportional to 85,112.43, 117,505.45 and 75,653.65 is: 104,446.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,112.43 : 117,505.45 = 75,653.65 : x
  2. Step 2: Convert to fraction form
    85,112.43/117,505.45 = 75,653.65/x
  3. Step 3: Cross multiply
    85,112.43x = 117,505.45 × 75,653.65
  4. Step 4: Simplify right side
    85,112.43x = 8,889,716,187.39
  5. Step 5: Solve for x
    x = 8,889,716,187.39/85,112.43
  6. Step 6: Final answer
    x = 104,446.74

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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.