Home / 122,869.96-169,558.86-71,917.72

Finding the Fourth Proportional to 122,869.96, 169,558.86 and 71,917.72

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Solution

The fourth proportional to 122,869.96, 169,558.86 and 71,917.72 is: 99,245.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,869.96 : 169,558.86 = 71,917.72 : x
  2. Step 2: Convert to fraction form
    122,869.96/169,558.86 = 71,917.72/x
  3. Step 3: Cross multiply
    122,869.96x = 169,558.86 × 71,917.72
  4. Step 4: Simplify right side
    122,869.96x = 12,194,286,617.00
  5. Step 5: Solve for x
    x = 12,194,286,617.00/122,869.96
  6. Step 6: Final answer
    x = 99,245.47

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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.