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Finding the Fourth Proportional to 117,707.70, 176,331.15 and 70,821.30

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Solution

The fourth proportional to 117,707.70, 176,331.15 and 70,821.30 is: 106,093.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,707.70 : 176,331.15 = 70,821.30 : x
  2. Step 2: Convert to fraction form
    117,707.70/176,331.15 = 70,821.30/x
  3. Step 3: Cross multiply
    117,707.70x = 176,331.15 × 70,821.30
  4. Step 4: Simplify right side
    117,707.70x = 12,488,001,273.50
  5. Step 5: Solve for x
    x = 12,488,001,273.50/117,707.70
  6. Step 6: Final answer
    x = 106,093.33

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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.