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Finding the Fourth Proportional to 156,332.22, 215,739.21 and 84,712.22

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Solution

The fourth proportional to 156,332.22, 215,739.21 and 84,712.22 is: 116,903.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,332.22 : 215,739.21 = 84,712.22 : x
  2. Step 2: Convert to fraction form
    156,332.22/215,739.21 = 84,712.22/x
  3. Step 3: Cross multiply
    156,332.22x = 215,739.21 × 84,712.22
  4. Step 4: Simplify right side
    156,332.22x = 18,275,747,420.15
  5. Step 5: Solve for x
    x = 18,275,747,420.15/156,332.22
  6. Step 6: Final answer
    x = 116,903.27

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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.