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Finding the Fourth Proportional to 235,595.50, 325,121.80 and 129,611.50

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Solution

The fourth proportional to 235,595.50, 325,121.80 and 129,611.50 is: 178,863.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,595.50 : 325,121.80 = 129,611.50 : x
  2. Step 2: Convert to fraction form
    235,595.50/325,121.80 = 129,611.50/x
  3. Step 3: Cross multiply
    235,595.50x = 325,121.80 × 129,611.50
  4. Step 4: Simplify right side
    235,595.50x = 42,139,524,180.70
  5. Step 5: Solve for x
    x = 42,139,524,180.70/235,595.50
  6. Step 6: Final answer
    x = 178,863.88

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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.