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Finding the Fourth Proportional to 118,366.50, 163,345.77 and 68,065.50

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Solution

The fourth proportional to 118,366.50, 163,345.77 and 68,065.50 is: 93,930.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,366.50 : 163,345.77 = 68,065.50 : x
  2. Step 2: Convert to fraction form
    118,366.50/163,345.77 = 68,065.50/x
  3. Step 3: Cross multiply
    118,366.50x = 163,345.77 × 68,065.50
  4. Step 4: Simplify right side
    118,366.50x = 11,118,211,507.94
  5. Step 5: Solve for x
    x = 11,118,211,507.94/118,366.50
  6. Step 6: Final answer
    x = 93,930.39

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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.