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Finding the Fourth Proportional to 117,211.81, 175,780.81 and 67,315.40

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Solution

The fourth proportional to 117,211.81, 175,780.81 and 67,315.40 is: 100,951.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,211.81 : 175,780.81 = 67,315.40 : x
  2. Step 2: Convert to fraction form
    117,211.81/175,780.81 = 67,315.40/x
  3. Step 3: Cross multiply
    117,211.81x = 175,780.81 × 67,315.40
  4. Step 4: Simplify right side
    117,211.81x = 11,832,756,201.33
  5. Step 5: Solve for x
    x = 11,832,756,201.33/117,211.81
  6. Step 6: Final answer
    x = 100,951.91

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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.