Home / 149,455.40-206,245.78-81,472.96

Finding the Fourth Proportional to 149,455.40, 206,245.78 and 81,472.96

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Solution

The fourth proportional to 149,455.40, 206,245.78 and 81,472.96 is: 112,431.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,455.40 : 206,245.78 = 81,472.96 : x
  2. Step 2: Convert to fraction form
    149,455.40/206,245.78 = 81,472.96/x
  3. Step 3: Cross multiply
    149,455.40x = 206,245.78 × 81,472.96
  4. Step 4: Simplify right side
    149,455.40x = 16,803,454,184.11
  5. Step 5: Solve for x
    x = 16,803,454,184.11/149,455.40
  6. Step 6: Final answer
    x = 112,431.23

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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.