Home / 149,139.10-205,816.61-84,611.06

Finding the Fourth Proportional to 149,139.10, 205,816.61 and 84,611.06

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Solution

The fourth proportional to 149,139.10, 205,816.61 and 84,611.06 is: 116,765.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,139.10 : 205,816.61 = 84,611.06 : x
  2. Step 2: Convert to fraction form
    149,139.10/205,816.61 = 84,611.06/x
  3. Step 3: Cross multiply
    149,139.10x = 205,816.61 × 84,611.06
  4. Step 4: Simplify right side
    149,139.10x = 17,414,361,491.96
  5. Step 5: Solve for x
    x = 17,414,361,491.96/149,139.10
  6. Step 6: Final answer
    x = 116,765.90

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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.