Home / 120,904.20-181,269.90-54,289.80

Finding the Fourth Proportional to 120,904.20, 181,269.90 and 54,289.80

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Solution

The fourth proportional to 120,904.20, 181,269.90 and 54,289.80 is: 81,395.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,904.20 : 181,269.90 = 54,289.80 : x
  2. Step 2: Convert to fraction form
    120,904.20/181,269.90 = 54,289.80/x
  3. Step 3: Cross multiply
    120,904.20x = 181,269.90 × 54,289.80
  4. Step 4: Simplify right side
    120,904.20x = 9,841,106,617.02
  5. Step 5: Solve for x
    x = 9,841,106,617.02/120,904.20
  6. Step 6: Final answer
    x = 81,395.90

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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.