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Finding the Fourth Proportional to 117,497.81, 162,149.87 and 63,782.71

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Solution

The fourth proportional to 117,497.81, 162,149.87 and 63,782.71 is: 88,021.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,497.81 : 162,149.87 = 63,782.71 : x
  2. Step 2: Convert to fraction form
    117,497.81/162,149.87 = 63,782.71/x
  3. Step 3: Cross multiply
    117,497.81x = 162,149.87 × 63,782.71
  4. Step 4: Simplify right side
    117,497.81x = 10,342,358,134.75
  5. Step 5: Solve for x
    x = 10,342,358,134.75/117,497.81
  6. Step 6: Final answer
    x = 88,021.71

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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.