Home / 120,979.17-181,468.35-31,021.79

Finding the Fourth Proportional to 120,979.17, 181,468.35 and 31,021.79

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Solution

The fourth proportional to 120,979.17, 181,468.35 and 31,021.79 is: 46,532.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,979.17 : 181,468.35 = 31,021.79 : x
  2. Step 2: Convert to fraction form
    120,979.17/181,468.35 = 31,021.79/x
  3. Step 3: Cross multiply
    120,979.17x = 181,468.35 × 31,021.79
  4. Step 4: Simplify right side
    120,979.17x = 5,629,472,138.00
  5. Step 5: Solve for x
    x = 5,629,472,138.00/120,979.17
  6. Step 6: Final answer
    x = 46,532.57

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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.