Home / 149,082.48-205,737.58-81,103.28

Finding the Fourth Proportional to 149,082.48, 205,737.58 and 81,103.28

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Solution

The fourth proportional to 149,082.48, 205,737.58 and 81,103.28 is: 111,924.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,082.48 : 205,737.58 = 81,103.28 : x
  2. Step 2: Convert to fraction form
    149,082.48/205,737.58 = 81,103.28/x
  3. Step 3: Cross multiply
    149,082.48x = 205,737.58 × 81,103.28
  4. Step 4: Simplify right side
    149,082.48x = 16,685,992,557.26
  5. Step 5: Solve for x
    x = 16,685,992,557.26/149,082.48
  6. Step 6: Final answer
    x = 111,924.57

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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.