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Finding the Fourth Proportional to 172,699.72, 259,049.22 and 54,381.40

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Solution

The fourth proportional to 172,699.72, 259,049.22 and 54,381.40 is: 81,571.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,699.72 : 259,049.22 = 54,381.40 : x
  2. Step 2: Convert to fraction form
    172,699.72/259,049.22 = 54,381.40/x
  3. Step 3: Cross multiply
    172,699.72x = 259,049.22 × 54,381.40
  4. Step 4: Simplify right side
    172,699.72x = 14,087,459,252.51
  5. Step 5: Solve for x
    x = 14,087,459,252.51/172,699.72
  6. Step 6: Final answer
    x = 81,571.99

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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.