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Finding the Fourth Proportional to 119,846.32, 165,447.78 and 74,538.90

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Solution

The fourth proportional to 119,846.32, 165,447.78 and 74,538.90 is: 102,900.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,846.32 : 165,447.78 = 74,538.90 : x
  2. Step 2: Convert to fraction form
    119,846.32/165,447.78 = 74,538.90/x
  3. Step 3: Cross multiply
    119,846.32x = 165,447.78 × 74,538.90
  4. Step 4: Simplify right side
    119,846.32x = 12,332,295,528.64
  5. Step 5: Solve for x
    x = 12,332,295,528.64/119,846.32
  6. Step 6: Final answer
    x = 102,900.91

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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.