Home / 120,728.10-181,092.15-31,995.30

Finding the Fourth Proportional to 120,728.10, 181,092.15 and 31,995.30

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Solution

The fourth proportional to 120,728.10, 181,092.15 and 31,995.30 is: 47,992.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,728.10 : 181,092.15 = 31,995.30 : x
  2. Step 2: Convert to fraction form
    120,728.10/181,092.15 = 31,995.30/x
  3. Step 3: Cross multiply
    120,728.10x = 181,092.15 × 31,995.30
  4. Step 4: Simplify right side
    120,728.10x = 5,794,097,666.90
  5. Step 5: Solve for x
    x = 5,794,097,666.90/120,728.10
  6. Step 6: Final answer
    x = 47,992.95

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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.