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Finding the Fourth Proportional to 115,190.65, 158,963.84 and 64,206.62

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Solution

The fourth proportional to 115,190.65, 158,963.84 and 64,206.62 is: 88,605.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,190.65 : 158,963.84 = 64,206.62 : x
  2. Step 2: Convert to fraction form
    115,190.65/158,963.84 = 64,206.62/x
  3. Step 3: Cross multiply
    115,190.65x = 158,963.84 × 64,206.62
  4. Step 4: Simplify right side
    115,190.65x = 10,206,529,752.77
  5. Step 5: Solve for x
    x = 10,206,529,752.77/115,190.65
  6. Step 6: Final answer
    x = 88,605.54

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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.