Home / 149,384.62-206,148.90-81,404.56

Finding the Fourth Proportional to 149,384.62, 206,148.90 and 81,404.56

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Solution

The fourth proportional to 149,384.62, 206,148.90 and 81,404.56 is: 112,337.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,384.62 : 206,148.90 = 81,404.56 : x
  2. Step 2: Convert to fraction form
    149,384.62/206,148.90 = 81,404.56/x
  3. Step 3: Cross multiply
    149,384.62x = 206,148.90 × 81,404.56
  4. Step 4: Simplify right side
    149,384.62x = 16,781,460,498.98
  5. Step 5: Solve for x
    x = 16,781,460,498.98/149,384.62
  6. Step 6: Final answer
    x = 112,337.27

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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.