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Finding the Fourth Proportional to 130,770.78, 195,969.04 and 74,494.68

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Solution

The fourth proportional to 130,770.78, 195,969.04 and 74,494.68 is: 111,635.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,770.78 : 195,969.04 = 74,494.68 : x
  2. Step 2: Convert to fraction form
    130,770.78/195,969.04 = 74,494.68/x
  3. Step 3: Cross multiply
    130,770.78x = 195,969.04 × 74,494.68
  4. Step 4: Simplify right side
    130,770.78x = 14,598,650,924.71
  5. Step 5: Solve for x
    x = 14,598,650,924.71/130,770.78
  6. Step 6: Final answer
    x = 111,635.42

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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.