Home / 129,146.64-178,150.41-120,013.32

Finding the Fourth Proportional to 129,146.64, 178,150.41 and 120,013.32

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Solution

The fourth proportional to 129,146.64, 178,150.41 and 120,013.32 is: 165,551.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,146.64 : 178,150.41 = 120,013.32 : x
  2. Step 2: Convert to fraction form
    129,146.64/178,150.41 = 120,013.32/x
  3. Step 3: Cross multiply
    129,146.64x = 178,150.41 × 120,013.32
  4. Step 4: Simplify right side
    129,146.64x = 21,380,422,163.46
  5. Step 5: Solve for x
    x = 21,380,422,163.46/129,146.64
  6. Step 6: Final answer
    x = 165,551.52

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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.