Home / 156,469.93-215,835.99-99,881.30

Finding the Fourth Proportional to 156,469.93, 215,835.99 and 99,881.30

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Solution

The fourth proportional to 156,469.93, 215,835.99 and 99,881.30 is: 137,777.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,469.93 : 215,835.99 = 99,881.30 : x
  2. Step 2: Convert to fraction form
    156,469.93/215,835.99 = 99,881.30/x
  3. Step 3: Cross multiply
    156,469.93x = 215,835.99 × 99,881.30
  4. Step 4: Simplify right side
    156,469.93x = 21,557,979,994.85
  5. Step 5: Solve for x
    x = 21,557,979,994.85/156,469.93
  6. Step 6: Final answer
    x = 137,777.15

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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.