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Finding the Fourth Proportional to 171,712.08, 257,568.12 and 78,322.32

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Solution

The fourth proportional to 171,712.08, 257,568.12 and 78,322.32 is: 117,483.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,712.08 : 257,568.12 = 78,322.32 : x
  2. Step 2: Convert to fraction form
    171,712.08/257,568.12 = 78,322.32/x
  3. Step 3: Cross multiply
    171,712.08x = 257,568.12 × 78,322.32
  4. Step 4: Simplify right side
    171,712.08x = 20,173,332,716.44
  5. Step 5: Solve for x
    x = 20,173,332,716.44/171,712.08
  6. Step 6: Final answer
    x = 117,483.48

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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.