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Finding the Fourth Proportional to 110,127.78, 152,040.87 and 79,884.06

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Solution

The fourth proportional to 110,127.78, 152,040.87 and 79,884.06 is: 110,286.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,127.78 : 152,040.87 = 79,884.06 : x
  2. Step 2: Convert to fraction form
    110,127.78/152,040.87 = 79,884.06/x
  3. Step 3: Cross multiply
    110,127.78x = 152,040.87 × 79,884.06
  4. Step 4: Simplify right side
    110,127.78x = 12,145,641,981.53
  5. Step 5: Solve for x
    x = 12,145,641,981.53/110,127.78
  6. Step 6: Final answer
    x = 110,286.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.