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Finding the Fourth Proportional to 122,040.20, 182,703.90 and 87,048.20

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Solution

The fourth proportional to 122,040.20, 182,703.90 and 87,048.20 is: 130,318.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,040.20 : 182,703.90 = 87,048.20 : x
  2. Step 2: Convert to fraction form
    122,040.20/182,703.90 = 87,048.20/x
  3. Step 3: Cross multiply
    122,040.20x = 182,703.90 × 87,048.20
  4. Step 4: Simplify right side
    122,040.20x = 15,904,045,627.98
  5. Step 5: Solve for x
    x = 15,904,045,627.98/122,040.20
  6. Step 6: Final answer
    x = 130,318.09

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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.