Home / 285,961.62-428,663.50-136,161.66

Finding the Fourth Proportional to 285,961.62, 428,663.50 and 136,161.66

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Solution

The fourth proportional to 285,961.62, 428,663.50 and 136,161.66 is: 204,109.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,961.62 : 428,663.50 = 136,161.66 : x
  2. Step 2: Convert to fraction form
    285,961.62/428,663.50 = 136,161.66/x
  3. Step 3: Cross multiply
    285,961.62x = 428,663.50 × 136,161.66
  4. Step 4: Simplify right side
    285,961.62x = 58,367,533,741.41
  5. Step 5: Solve for x
    x = 58,367,533,741.41/285,961.62
  6. Step 6: Final answer
    x = 204,109.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.