Home / 156,932.86-216,571.59-85,317.79

Finding the Fourth Proportional to 156,932.86, 216,571.59 and 85,317.79

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Solution

The fourth proportional to 156,932.86, 216,571.59 and 85,317.79 is: 117,740.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,932.86 : 216,571.59 = 85,317.79 : x
  2. Step 2: Convert to fraction form
    156,932.86/216,571.59 = 85,317.79/x
  3. Step 3: Cross multiply
    156,932.86x = 216,571.59 × 85,317.79
  4. Step 4: Simplify right side
    156,932.86x = 18,477,409,435.59
  5. Step 5: Solve for x
    x = 18,477,409,435.59/156,932.86
  6. Step 6: Final answer
    x = 117,740.86

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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.