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Finding the Fourth Proportional to 145,410.35, 200,664.16 and 80,878.91

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Solution

The fourth proportional to 145,410.35, 200,664.16 and 80,878.91 is: 111,611.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,410.35 : 200,664.16 = 80,878.91 : x
  2. Step 2: Convert to fraction form
    145,410.35/200,664.16 = 80,878.91/x
  3. Step 3: Cross multiply
    145,410.35x = 200,664.16 × 80,878.91
  4. Step 4: Simplify right side
    145,410.35x = 16,229,497,331.35
  5. Step 5: Solve for x
    x = 16,229,497,331.35/145,410.35
  6. Step 6: Final answer
    x = 111,611.71

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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.