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Finding the Fourth Proportional to 171,365.76, 257,078.88 and 66,175.92

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Solution

The fourth proportional to 171,365.76, 257,078.88 and 66,175.92 is: 99,275.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,365.76 : 257,078.88 = 66,175.92 : x
  2. Step 2: Convert to fraction form
    171,365.76/257,078.88 = 66,175.92/x
  3. Step 3: Cross multiply
    171,365.76x = 257,078.88 × 66,175.92
  4. Step 4: Simplify right side
    171,365.76x = 17,012,431,396.57
  5. Step 5: Solve for x
    x = 17,012,431,396.57/171,365.76
  6. Step 6: Final answer
    x = 99,275.56

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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.