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Finding the Fourth Proportional to 115,470.28, 159,364.83 and 67,739.01

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Solution

The fourth proportional to 115,470.28, 159,364.83 and 67,739.01 is: 93,489.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,470.28 : 159,364.83 = 67,739.01 : x
  2. Step 2: Convert to fraction form
    115,470.28/159,364.83 = 67,739.01/x
  3. Step 3: Cross multiply
    115,470.28x = 159,364.83 × 67,739.01
  4. Step 4: Simplify right side
    115,470.28x = 10,795,215,813.02
  5. Step 5: Solve for x
    x = 10,795,215,813.02/115,470.28
  6. Step 6: Final answer
    x = 93,489.13

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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.