Home / 149,158.53-205,838.82-81,175.77

Finding the Fourth Proportional to 149,158.53, 205,838.82 and 81,175.77

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Solution

The fourth proportional to 149,158.53, 205,838.82 and 81,175.77 is: 112,022.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,158.53 : 205,838.82 = 81,175.77 : x
  2. Step 2: Convert to fraction form
    149,158.53/205,838.82 = 81,175.77/x
  3. Step 3: Cross multiply
    149,158.53x = 205,838.82 × 81,175.77
  4. Step 4: Simplify right side
    149,158.53x = 16,709,124,709.39
  5. Step 5: Solve for x
    x = 16,709,124,709.39/149,158.53
  6. Step 6: Final answer
    x = 112,022.59

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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.