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Finding the Fourth Proportional to 171,322.80, 256,994.28 and 66,142.32

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Solution

The fourth proportional to 171,322.80, 256,994.28 and 66,142.32 is: 99,217.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,322.80 : 256,994.28 = 66,142.32 : x
  2. Step 2: Convert to fraction form
    171,322.80/256,994.28 = 66,142.32/x
  3. Step 3: Cross multiply
    171,322.80x = 256,994.28 × 66,142.32
  4. Step 4: Simplify right side
    171,322.80x = 16,998,197,905.93
  5. Step 5: Solve for x
    x = 16,998,197,905.93/171,322.80
  6. Step 6: Final answer
    x = 99,217.37

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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.