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Finding the Fourth Proportional to 170,878.08, 256,171.16 and 120,800.64

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Solution

The fourth proportional to 170,878.08, 256,171.16 and 120,800.64 is: 181,097.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,878.08 : 256,171.16 = 120,800.64 : x
  2. Step 2: Convert to fraction form
    170,878.08/256,171.16 = 120,800.64/x
  3. Step 3: Cross multiply
    170,878.08x = 256,171.16 × 120,800.64
  4. Step 4: Simplify right side
    170,878.08x = 30,945,640,077.54
  5. Step 5: Solve for x
    x = 30,945,640,077.54/170,878.08
  6. Step 6: Final answer
    x = 181,097.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.