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Finding the Fourth Proportional to 172,553.60, 258,625.60 and 72,713.60

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Solution

The fourth proportional to 172,553.60, 258,625.60 and 72,713.60 is: 108,984.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,553.60 : 258,625.60 = 72,713.60 : x
  2. Step 2: Convert to fraction form
    172,553.60/258,625.60 = 72,713.60/x
  3. Step 3: Cross multiply
    172,553.60x = 258,625.60 × 72,713.60
  4. Step 4: Simplify right side
    172,553.60x = 18,805,598,428.16
  5. Step 5: Solve for x
    x = 18,805,598,428.16/172,553.60
  6. Step 6: Final answer
    x = 108,984.10

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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.