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Finding the Fourth Proportional to 120,861.88, 181,230.50 and 54,244.90

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Solution

The fourth proportional to 120,861.88, 181,230.50 and 54,244.90 is: 81,339.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,861.88 : 181,230.50 = 54,244.90 : x
  2. Step 2: Convert to fraction form
    120,861.88/181,230.50 = 54,244.90/x
  3. Step 3: Cross multiply
    120,861.88x = 181,230.50 × 54,244.90
  4. Step 4: Simplify right side
    120,861.88x = 9,830,830,349.45
  5. Step 5: Solve for x
    x = 9,830,830,349.45/120,861.88
  6. Step 6: Final answer
    x = 81,339.38

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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.