Home / 129,179.01-178,297.02-81,497.55

Finding the Fourth Proportional to 129,179.01, 178,297.02 and 81,497.55

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Solution

The fourth proportional to 129,179.01, 178,297.02 and 81,497.55 is: 112,485.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,179.01 : 178,297.02 = 81,497.55 : x
  2. Step 2: Convert to fraction form
    129,179.01/178,297.02 = 81,497.55/x
  3. Step 3: Cross multiply
    129,179.01x = 178,297.02 × 81,497.55
  4. Step 4: Simplify right side
    129,179.01x = 14,530,770,302.30
  5. Step 5: Solve for x
    x = 14,530,770,302.30/129,179.01
  6. Step 6: Final answer
    x = 112,485.54

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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.