Home / 156,463.54-215,863.09-102,777.78

Finding the Fourth Proportional to 156,463.54, 215,863.09 and 102,777.78

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Solution

The fourth proportional to 156,463.54, 215,863.09 and 102,777.78 is: 141,796.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,463.54 : 215,863.09 = 102,777.78 : x
  2. Step 2: Convert to fraction form
    156,463.54/215,863.09 = 102,777.78/x
  3. Step 3: Cross multiply
    156,463.54x = 215,863.09 × 102,777.78
  4. Step 4: Simplify right side
    156,463.54x = 22,185,929,174.14
  5. Step 5: Solve for x
    x = 22,185,929,174.14/156,463.54
  6. Step 6: Final answer
    x = 141,796.16

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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.