Home / 131,238.61-181,107.71-74,649.85

Finding the Fourth Proportional to 131,238.61, 181,107.71 and 74,649.85

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Solution

The fourth proportional to 131,238.61, 181,107.71 and 74,649.85 is: 103,015.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,238.61 : 181,107.71 = 74,649.85 : x
  2. Step 2: Convert to fraction form
    131,238.61/181,107.71 = 74,649.85/x
  3. Step 3: Cross multiply
    131,238.61x = 181,107.71 × 74,649.85
  4. Step 4: Simplify right side
    131,238.61x = 13,519,663,012.09
  5. Step 5: Solve for x
    x = 13,519,663,012.09/131,238.61
  6. Step 6: Final answer
    x = 103,015.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.