Home / 156,802.16-216,388.82-85,183.31

Finding the Fourth Proportional to 156,802.16, 216,388.82 and 85,183.31

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Solution

The fourth proportional to 156,802.16, 216,388.82 and 85,183.31 is: 117,553.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,802.16 : 216,388.82 = 85,183.31 : x
  2. Step 2: Convert to fraction form
    156,802.16/216,388.82 = 85,183.31/x
  3. Step 3: Cross multiply
    156,802.16x = 216,388.82 × 85,183.31
  4. Step 4: Simplify right side
    156,802.16x = 18,432,715,934.59
  5. Step 5: Solve for x
    x = 18,432,715,934.59/156,802.16
  6. Step 6: Final answer
    x = 117,553.97

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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.