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Finding the Fourth Proportional to 118,606.92, 163,628.28 and 77,759.88

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Solution

The fourth proportional to 118,606.92, 163,628.28 and 77,759.88 is: 107,276.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,606.92 : 163,628.28 = 77,759.88 : x
  2. Step 2: Convert to fraction form
    118,606.92/163,628.28 = 77,759.88/x
  3. Step 3: Cross multiply
    118,606.92x = 163,628.28 × 77,759.88
  4. Step 4: Simplify right side
    118,606.92x = 12,723,715,417.41
  5. Step 5: Solve for x
    x = 12,723,715,417.41/118,606.92
  6. Step 6: Final answer
    x = 107,276.33

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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.