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Finding the Fourth Proportional to 171,585.18, 257,290.01 and 71,718.12

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Solution

The fourth proportional to 171,585.18, 257,290.01 and 71,718.12 is: 107,540.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,585.18 : 257,290.01 = 71,718.12 : x
  2. Step 2: Convert to fraction form
    171,585.18/257,290.01 = 71,718.12/x
  3. Step 3: Cross multiply
    171,585.18x = 257,290.01 × 71,718.12
  4. Step 4: Simplify right side
    171,585.18x = 18,452,355,453.39
  5. Step 5: Solve for x
    x = 18,452,355,453.39/171,585.18
  6. Step 6: Final answer
    x = 107,540.50

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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.