Home / 156,780.48-216,358.66-85,161.90

Finding the Fourth Proportional to 156,780.48, 216,358.66 and 85,161.90

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Solution

The fourth proportional to 156,780.48, 216,358.66 and 85,161.90 is: 117,524.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,780.48 : 216,358.66 = 85,161.90 : x
  2. Step 2: Convert to fraction form
    156,780.48/216,358.66 = 85,161.90/x
  3. Step 3: Cross multiply
    156,780.48x = 216,358.66 × 85,161.90
  4. Step 4: Simplify right side
    156,780.48x = 18,425,514,567.05
  5. Step 5: Solve for x
    x = 18,425,514,567.05/156,780.48
  6. Step 6: Final answer
    x = 117,524.29

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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.