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Finding the Fourth Proportional to 123,297.56, 170,150.70 and 85,593.68

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Solution

The fourth proportional to 123,297.56, 170,150.70 and 85,593.68 is: 118,119.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,297.56 : 170,150.70 = 85,593.68 : x
  2. Step 2: Convert to fraction form
    123,297.56/170,150.70 = 85,593.68/x
  3. Step 3: Cross multiply
    123,297.56x = 170,150.70 × 85,593.68
  4. Step 4: Simplify right side
    123,297.56x = 14,563,824,567.58
  5. Step 5: Solve for x
    x = 14,563,824,567.58/123,297.56
  6. Step 6: Final answer
    x = 118,119.33

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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.