Home / 156,750.20-216,315.89-85,131.41

Finding the Fourth Proportional to 156,750.20, 216,315.89 and 85,131.41

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Solution

The fourth proportional to 156,750.20, 216,315.89 and 85,131.41 is: 117,481.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,750.20 : 216,315.89 = 85,131.41 : x
  2. Step 2: Convert to fraction form
    156,750.20/216,315.89 = 85,131.41/x
  3. Step 3: Cross multiply
    156,750.20x = 216,315.89 × 85,131.41
  4. Step 4: Simplify right side
    156,750.20x = 18,415,277,474.72
  5. Step 5: Solve for x
    x = 18,415,277,474.72/156,750.20
  6. Step 6: Final answer
    x = 117,481.69

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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.