Home / 82,125.90-123,188.85-19,796.40

Finding the Fourth Proportional to 82,125.90, 123,188.85 and 19,796.40

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Solution

The fourth proportional to 82,125.90, 123,188.85 and 19,796.40 is: 29,694.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,125.90 : 123,188.85 = 19,796.40 : x
  2. Step 2: Convert to fraction form
    82,125.90/123,188.85 = 19,796.40/x
  3. Step 3: Cross multiply
    82,125.90x = 123,188.85 × 19,796.40
  4. Step 4: Simplify right side
    82,125.90x = 2,438,695,750.14
  5. Step 5: Solve for x
    x = 2,438,695,750.14/82,125.90
  6. Step 6: Final answer
    x = 29,694.60

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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.