Home / 156,121.88-215,448.00-84,501.73

Finding the Fourth Proportional to 156,121.88, 215,448.00 and 84,501.73

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Solution

The fourth proportional to 156,121.88, 215,448.00 and 84,501.73 is: 116,612.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,121.88 : 215,448.00 = 84,501.73 : x
  2. Step 2: Convert to fraction form
    156,121.88/215,448.00 = 84,501.73/x
  3. Step 3: Cross multiply
    156,121.88x = 215,448.00 × 84,501.73
  4. Step 4: Simplify right side
    156,121.88x = 18,205,729,152.79
  5. Step 5: Solve for x
    x = 18,205,729,152.79/156,121.88
  6. Step 6: Final answer
    x = 116,612.28

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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.