Home / 149,384.86-206,148.44-81,402.42

Finding the Fourth Proportional to 149,384.86, 206,148.44 and 81,402.42

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Solution

The fourth proportional to 149,384.86, 206,148.44 and 81,402.42 is: 112,333.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,384.86 : 206,148.44 = 81,402.42 : x
  2. Step 2: Convert to fraction form
    149,384.86/206,148.44 = 81,402.42/x
  3. Step 3: Cross multiply
    149,384.86x = 206,148.44 × 81,402.42
  4. Step 4: Simplify right side
    149,384.86x = 16,780,981,712.20
  5. Step 5: Solve for x
    x = 16,780,981,712.20/149,384.86
  6. Step 6: Final answer
    x = 112,333.89

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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.