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Finding the Fourth Proportional to 123,854.64, 170,949.99 and 70,171.30

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Solution

The fourth proportional to 123,854.64, 170,949.99 and 70,171.30 is: 96,853.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,854.64 : 170,949.99 = 70,171.30 : x
  2. Step 2: Convert to fraction form
    123,854.64/170,949.99 = 70,171.30/x
  3. Step 3: Cross multiply
    123,854.64x = 170,949.99 × 70,171.30
  4. Step 4: Simplify right side
    123,854.64x = 11,995,783,033.29
  5. Step 5: Solve for x
    x = 11,995,783,033.29/123,854.64
  6. Step 6: Final answer
    x = 96,853.72

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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.