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Finding the Fourth Proportional to 101,376.72, 152,013.16 and 54,018.80

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Solution

The fourth proportional to 101,376.72, 152,013.16 and 54,018.80 is: 81,000.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,376.72 : 152,013.16 = 54,018.80 : x
  2. Step 2: Convert to fraction form
    101,376.72/152,013.16 = 54,018.80/x
  3. Step 3: Cross multiply
    101,376.72x = 152,013.16 × 54,018.80
  4. Step 4: Simplify right side
    101,376.72x = 8,211,568,487.41
  5. Step 5: Solve for x
    x = 8,211,568,487.41/101,376.72
  6. Step 6: Final answer
    x = 81,000.53

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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.