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Finding the Fourth Proportional to 122,542.70, 183,814.05 and 80,552.30

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Solution

The fourth proportional to 122,542.70, 183,814.05 and 80,552.30 is: 120,828.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,542.70 : 183,814.05 = 80,552.30 : x
  2. Step 2: Convert to fraction form
    122,542.70/183,814.05 = 80,552.30/x
  3. Step 3: Cross multiply
    122,542.70x = 183,814.05 × 80,552.30
  4. Step 4: Simplify right side
    122,542.70x = 14,806,644,499.82
  5. Step 5: Solve for x
    x = 14,806,644,499.82/122,542.70
  6. Step 6: Final answer
    x = 120,828.45

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Similar ratio
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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.