Home / 82,819.10-124,228.65-78,542.30

Finding the Fourth Proportional to 82,819.10, 124,228.65 and 78,542.30

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Solution

The fourth proportional to 82,819.10, 124,228.65 and 78,542.30 is: 117,813.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,819.10 : 124,228.65 = 78,542.30 : x
  2. Step 2: Convert to fraction form
    82,819.10/124,228.65 = 78,542.30/x
  3. Step 3: Cross multiply
    82,819.10x = 124,228.65 × 78,542.30
  4. Step 4: Simplify right side
    82,819.10x = 9,757,203,896.90
  5. Step 5: Solve for x
    x = 9,757,203,896.90/82,819.10
  6. Step 6: Final answer
    x = 117,813.45

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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.