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Finding the Fourth Proportional to 199,385.97, 275,142.93 and 118,811.70

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Solution

The fourth proportional to 199,385.97, 275,142.93 and 118,811.70 is: 163,954.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,385.97 : 275,142.93 = 118,811.70 : x
  2. Step 2: Convert to fraction form
    199,385.97/275,142.93 = 118,811.70/x
  3. Step 3: Cross multiply
    199,385.97x = 275,142.93 × 118,811.70
  4. Step 4: Simplify right side
    199,385.97x = 32,690,199,256.28
  5. Step 5: Solve for x
    x = 32,690,199,256.28/199,385.97
  6. Step 6: Final answer
    x = 163,954.36

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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.