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Finding the Fourth Proportional to 151,309.81, 208,797.92 and 90,883

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Solution

The fourth proportional to 151,309.81, 208,797.92 and 90,883 is: 125,412.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,309.81 : 208,797.92 = 90,883 : x
  2. Step 2: Convert to fraction form
    151,309.81/208,797.92 = 90,883/x
  3. Step 3: Cross multiply
    151,309.81x = 208,797.92 × 90,883
  4. Step 4: Simplify right side
    151,309.81x = 18,976,180,908.95
  5. Step 5: Solve for x
    x = 18,976,180,908.95/151,309.81
  6. Step 6: Final answer
    x = 125,412.76

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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.