Home / 149,141.37-205,818.90-81,162.03

Finding the Fourth Proportional to 149,141.37, 205,818.90 and 81,162.03

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Solution

The fourth proportional to 149,141.37, 205,818.90 and 81,162.03 is: 112,005.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,141.37 : 205,818.90 = 81,162.03 : x
  2. Step 2: Convert to fraction form
    149,141.37/205,818.90 = 81,162.03/x
  3. Step 3: Cross multiply
    149,141.37x = 205,818.90 × 81,162.03
  4. Step 4: Simplify right side
    149,141.37x = 16,704,679,736.37
  5. Step 5: Solve for x
    x = 16,704,679,736.37/149,141.37
  6. Step 6: Final answer
    x = 112,005.67

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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.