Home / 156,939.86-216,581.25-85,324.79

Finding the Fourth Proportional to 156,939.86, 216,581.25 and 85,324.79

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Solution

The fourth proportional to 156,939.86, 216,581.25 and 85,324.79 is: 117,750.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,939.86 : 216,581.25 = 85,324.79 : x
  2. Step 2: Convert to fraction form
    156,939.86/216,581.25 = 85,324.79/x
  3. Step 3: Cross multiply
    156,939.86x = 216,581.25 × 85,324.79
  4. Step 4: Simplify right side
    156,939.86x = 18,479,749,674.19
  5. Step 5: Solve for x
    x = 18,479,749,674.19/156,939.86
  6. Step 6: Final answer
    x = 117,750.52

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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.