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Finding the Fourth Proportional to 123,752.90, 170,778.97 and 67,164.28

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Solution

The fourth proportional to 123,752.90, 170,778.97 and 67,164.28 is: 92,686.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,752.90 : 170,778.97 = 67,164.28 : x
  2. Step 2: Convert to fraction form
    123,752.90/170,778.97 = 67,164.28/x
  3. Step 3: Cross multiply
    123,752.90x = 170,778.97 × 67,164.28
  4. Step 4: Simplify right side
    123,752.90x = 11,470,245,705.30
  5. Step 5: Solve for x
    x = 11,470,245,705.30/123,752.90
  6. Step 6: Final answer
    x = 92,686.68

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1.5x scale

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.