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Finding the Fourth Proportional to 171,507.15, 257,260.85 and 71,612.91

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Solution

The fourth proportional to 171,507.15, 257,260.85 and 71,612.91 is: 107,419.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,507.15 : 257,260.85 = 71,612.91 : x
  2. Step 2: Convert to fraction form
    171,507.15/257,260.85 = 71,612.91/x
  3. Step 3: Cross multiply
    171,507.15x = 257,260.85 × 71,612.91
  4. Step 4: Simplify right side
    171,507.15x = 18,423,197,739.51
  5. Step 5: Solve for x
    x = 18,423,197,739.51/171,507.15
  6. Step 6: Final answer
    x = 107,419.42

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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.