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Finding the Fourth Proportional to 129,657, 194,518.32 and 36,162.75

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Solution

The fourth proportional to 129,657, 194,518.32 and 36,162.75 is: 54,253.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,657 : 194,518.32 = 36,162.75 : x
  2. Step 2: Convert to fraction form
    129,657/194,518.32 = 36,162.75/x
  3. Step 3: Cross multiply
    129,657x = 194,518.32 × 36,162.75
  4. Step 4: Simplify right side
    129,657x = 7,034,317,376.58
  5. Step 5: Solve for x
    x = 7,034,317,376.58/129,657
  6. Step 6: Final answer
    x = 54,253.28

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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.