Home / 156,498.21-215,967.20-84,877.88

Finding the Fourth Proportional to 156,498.21, 215,967.20 and 84,877.88

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Solution

The fourth proportional to 156,498.21, 215,967.20 and 84,877.88 is: 117,131.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,498.21 : 215,967.20 = 84,877.88 : x
  2. Step 2: Convert to fraction form
    156,498.21/215,967.20 = 84,877.88/x
  3. Step 3: Cross multiply
    156,498.21x = 215,967.20 × 84,877.88
  4. Step 4: Simplify right side
    156,498.21x = 18,330,836,581.31
  5. Step 5: Solve for x
    x = 18,330,836,581.31/156,498.21
  6. Step 6: Final answer
    x = 117,131.29

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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.