Home / 109,990.28-151,708.17-100,944.79

Finding the Fourth Proportional to 109,990.28, 151,708.17 and 100,944.79

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Solution

The fourth proportional to 109,990.28, 151,708.17 and 100,944.79 is: 139,231.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,990.28 : 151,708.17 = 100,944.79 : x
  2. Step 2: Convert to fraction form
    109,990.28/151,708.17 = 100,944.79/x
  3. Step 3: Cross multiply
    109,990.28x = 151,708.17 × 100,944.79
  4. Step 4: Simplify right side
    109,990.28x = 15,314,148,982.66
  5. Step 5: Solve for x
    x = 15,314,148,982.66/109,990.28
  6. Step 6: Final answer
    x = 139,231.84

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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.