Home / 90,709.56-125,181.90-54,906.12

Finding the Fourth Proportional to 90,709.56, 125,181.90 and 54,906.12

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Solution

The fourth proportional to 90,709.56, 125,181.90 and 54,906.12 is: 75,772.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,709.56 : 125,181.90 = 54,906.12 : x
  2. Step 2: Convert to fraction form
    90,709.56/125,181.90 = 54,906.12/x
  3. Step 3: Cross multiply
    90,709.56x = 125,181.90 × 54,906.12
  4. Step 4: Simplify right side
    90,709.56x = 6,873,252,423.23
  5. Step 5: Solve for x
    x = 6,873,252,423.23/90,709.56
  6. Step 6: Final answer
    x = 75,772.08

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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.