Home / 149,247.70-205,966.86-81,267.30

Finding the Fourth Proportional to 149,247.70, 205,966.86 and 81,267.30

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Solution

The fourth proportional to 149,247.70, 205,966.86 and 81,267.30 is: 112,151.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,247.70 : 205,966.86 = 81,267.30 : x
  2. Step 2: Convert to fraction form
    149,247.70/205,966.86 = 81,267.30/x
  3. Step 3: Cross multiply
    149,247.70x = 205,966.86 × 81,267.30
  4. Step 4: Simplify right side
    149,247.70x = 16,738,370,601.68
  5. Step 5: Solve for x
    x = 16,738,370,601.68/149,247.70
  6. Step 6: Final answer
    x = 112,151.62

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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.