Home / 82,113.80-123,170.70-78,833.30

Finding the Fourth Proportional to 82,113.80, 123,170.70 and 78,833.30

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Solution

The fourth proportional to 82,113.80, 123,170.70 and 78,833.30 is: 118,249.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,113.80 : 123,170.70 = 78,833.30 : x
  2. Step 2: Convert to fraction form
    82,113.80/123,170.70 = 78,833.30/x
  3. Step 3: Cross multiply
    82,113.80x = 123,170.70 × 78,833.30
  4. Step 4: Simplify right side
    82,113.80x = 9,709,952,744.31
  5. Step 5: Solve for x
    x = 9,709,952,744.31/82,113.80
  6. Step 6: Final answer
    x = 118,249.95

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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.