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Finding the Fourth Proportional to 111,440.45, 153,750.42 and 63,659.97

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Solution

The fourth proportional to 111,440.45, 153,750.42 and 63,659.97 is: 87,829.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,440.45 : 153,750.42 = 63,659.97 : x
  2. Step 2: Convert to fraction form
    111,440.45/153,750.42 = 63,659.97/x
  3. Step 3: Cross multiply
    111,440.45x = 153,750.42 × 63,659.97
  4. Step 4: Simplify right side
    111,440.45x = 9,787,747,124.69
  5. Step 5: Solve for x
    x = 9,787,747,124.69/111,440.45
  6. Step 6: Final answer
    x = 87,829.39

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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.