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Finding the Fourth Proportional to 172,291.08, 258,416.10 and 45,940.80

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Solution

The fourth proportional to 172,291.08, 258,416.10 and 45,940.80 is: 68,905.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,291.08 : 258,416.10 = 45,940.80 : x
  2. Step 2: Convert to fraction form
    172,291.08/258,416.10 = 45,940.80/x
  3. Step 3: Cross multiply
    172,291.08x = 258,416.10 × 45,940.80
  4. Step 4: Simplify right side
    172,291.08x = 11,871,842,366.88
  5. Step 5: Solve for x
    x = 11,871,842,366.88/172,291.08
  6. Step 6: Final answer
    x = 68,905.73

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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.