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Finding the Fourth Proportional to 171,908.22, 257,962.73 and 72,060.74

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Solution

The fourth proportional to 171,908.22, 257,962.73 and 72,060.74 is: 108,133.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,908.22 : 257,962.73 = 72,060.74 : x
  2. Step 2: Convert to fraction form
    171,908.22/257,962.73 = 72,060.74/x
  3. Step 3: Cross multiply
    171,908.22x = 257,962.73 × 72,060.74
  4. Step 4: Simplify right side
    171,908.22x = 18,588,984,533.46
  5. Step 5: Solve for x
    x = 18,588,984,533.46/171,908.22
  6. Step 6: Final answer
    x = 108,133.19

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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.