Home / 156,521.31-215,967.90-99,183.03

Finding the Fourth Proportional to 156,521.31, 215,967.90 and 99,183.03

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Solution

The fourth proportional to 156,521.31, 215,967.90 and 99,183.03 is: 136,852.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,521.31 : 215,967.90 = 99,183.03 : x
  2. Step 2: Convert to fraction form
    156,521.31/215,967.90 = 99,183.03/x
  3. Step 3: Cross multiply
    156,521.31x = 215,967.90 × 99,183.03
  4. Step 4: Simplify right side
    156,521.31x = 21,420,350,704.74
  5. Step 5: Solve for x
    x = 21,420,350,704.74/156,521.31
  6. Step 6: Final answer
    x = 136,852.62

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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.