Home / 120,649.09-181,004.39-85,179.52

Finding the Fourth Proportional to 120,649.09, 181,004.39 and 85,179.52

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Solution

The fourth proportional to 120,649.09, 181,004.39 and 85,179.52 is: 127,790.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,649.09 : 181,004.39 = 85,179.52 : x
  2. Step 2: Convert to fraction form
    120,649.09/181,004.39 = 85,179.52/x
  3. Step 3: Cross multiply
    120,649.09x = 181,004.39 × 85,179.52
  4. Step 4: Simplify right side
    120,649.09x = 15,417,866,818.53
  5. Step 5: Solve for x
    x = 15,417,866,818.53/120,649.09
  6. Step 6: Final answer
    x = 127,790.99

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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.