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Finding the Fourth Proportional to 118,417.34, 177,653.72 and 80,995.04

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Solution

The fourth proportional to 118,417.34, 177,653.72 and 80,995.04 is: 121,511.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,417.34 : 177,653.72 = 80,995.04 : x
  2. Step 2: Convert to fraction form
    118,417.34/177,653.72 = 80,995.04/x
  3. Step 3: Cross multiply
    118,417.34x = 177,653.72 × 80,995.04
  4. Step 4: Simplify right side
    118,417.34x = 14,389,070,137.97
  5. Step 5: Solve for x
    x = 14,389,070,137.97/118,417.34
  6. Step 6: Final answer
    x = 121,511.51

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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.