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Finding the Fourth Proportional to 111,392.24, 166,792.76 and 87,134.80

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Solution

The fourth proportional to 111,392.24, 166,792.76 and 87,134.80 is: 130,470.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,392.24 : 166,792.76 = 87,134.80 : x
  2. Step 2: Convert to fraction form
    111,392.24/166,792.76 = 87,134.80/x
  3. Step 3: Cross multiply
    111,392.24x = 166,792.76 × 87,134.80
  4. Step 4: Simplify right side
    111,392.24x = 14,533,453,784.05
  5. Step 5: Solve for x
    x = 14,533,453,784.05/111,392.24
  6. Step 6: Final answer
    x = 130,470.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.