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Finding the Fourth Proportional to 172,502.60, 258,764.88 and 54,178.62

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Solution

The fourth proportional to 172,502.60, 258,764.88 and 54,178.62 is: 81,271.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,502.60 : 258,764.88 = 54,178.62 : x
  2. Step 2: Convert to fraction form
    172,502.60/258,764.88 = 54,178.62/x
  3. Step 3: Cross multiply
    172,502.60x = 258,764.88 × 54,178.62
  4. Step 4: Simplify right side
    172,502.60x = 14,019,524,102.87
  5. Step 5: Solve for x
    x = 14,019,524,102.87/172,502.60
  6. Step 6: Final answer
    x = 81,271.38

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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.