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Finding the Fourth Proportional to 117,615.80, 176,229.30 and 100,897.40

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Solution

The fourth proportional to 117,615.80, 176,229.30 and 100,897.40 is: 151,179.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,615.80 : 176,229.30 = 100,897.40 : x
  2. Step 2: Convert to fraction form
    117,615.80/176,229.30 = 100,897.40/x
  3. Step 3: Cross multiply
    117,615.80x = 176,229.30 × 100,897.40
  4. Step 4: Simplify right side
    117,615.80x = 17,781,078,173.82
  5. Step 5: Solve for x
    x = 17,781,078,173.82/117,615.80
  6. Step 6: Final answer
    x = 151,179.33

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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.