Home / 90,723.15-125,178.62-54,906.03

Finding the Fourth Proportional to 90,723.15, 125,178.62 and 54,906.03

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Solution

The fourth proportional to 90,723.15, 125,178.62 and 54,906.03 is: 75,758.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,723.15 : 125,178.62 = 54,906.03 : x
  2. Step 2: Convert to fraction form
    90,723.15/125,178.62 = 54,906.03/x
  3. Step 3: Cross multiply
    90,723.15x = 125,178.62 × 54,906.03
  4. Step 4: Simplify right side
    90,723.15x = 6,873,060,790.55
  5. Step 5: Solve for x
    x = 6,873,060,790.55/90,723.15
  6. Step 6: Final answer
    x = 75,758.62

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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.