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Finding the Fourth Proportional to 151,393.46, 208,912.97 and 90,928.17

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Solution

The fourth proportional to 151,393.46, 208,912.97 and 90,928.17 is: 125,474.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,393.46 : 208,912.97 = 90,928.17 : x
  2. Step 2: Convert to fraction form
    151,393.46/208,912.97 = 90,928.17/x
  3. Step 3: Cross multiply
    151,393.46x = 208,912.97 × 90,928.17
  4. Step 4: Simplify right side
    151,393.46x = 18,996,074,278.69
  5. Step 5: Solve for x
    x = 18,996,074,278.69/151,393.46
  6. Step 6: Final answer
    x = 125,474.87

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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.