Home / 85,717.44-128,773.80-82,174.50

Finding the Fourth Proportional to 85,717.44, 128,773.80 and 82,174.50

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Solution

The fourth proportional to 85,717.44, 128,773.80 and 82,174.50 is: 123,451.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,717.44 : 128,773.80 = 82,174.50 : x
  2. Step 2: Convert to fraction form
    85,717.44/128,773.80 = 82,174.50/x
  3. Step 3: Cross multiply
    85,717.44x = 128,773.80 × 82,174.50
  4. Step 4: Simplify right side
    85,717.44x = 10,581,922,628.10
  5. Step 5: Solve for x
    x = 10,581,922,628.10/85,717.44
  6. Step 6: Final answer
    x = 123,451.22

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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.