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Finding the Fourth Proportional to 115,450.60, 159,323.94 and 65,139.88

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Solution

The fourth proportional to 115,450.60, 159,323.94 and 65,139.88 is: 89,894.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,450.60 : 159,323.94 = 65,139.88 : x
  2. Step 2: Convert to fraction form
    115,450.60/159,323.94 = 65,139.88/x
  3. Step 3: Cross multiply
    115,450.60x = 159,323.94 × 65,139.88
  4. Step 4: Simplify right side
    115,450.60x = 10,378,342,332.73
  5. Step 5: Solve for x
    x = 10,378,342,332.73/115,450.60
  6. Step 6: Final answer
    x = 89,894.23

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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.