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Finding the Fourth Proportional to 171,465.60, 257,090.40 and 71,695.20

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Solution

The fourth proportional to 171,465.60, 257,090.40 and 71,695.20 is: 107,497.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,465.60 : 257,090.40 = 71,695.20 : x
  2. Step 2: Convert to fraction form
    171,465.60/257,090.40 = 71,695.20/x
  3. Step 3: Cross multiply
    171,465.60x = 257,090.40 × 71,695.20
  4. Step 4: Simplify right side
    171,465.60x = 18,432,147,646.08
  5. Step 5: Solve for x
    x = 18,432,147,646.08/171,465.60
  6. Step 6: Final answer
    x = 107,497.64

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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.