Home / 122,938.22-169,640.70-69,221.86

Finding the Fourth Proportional to 122,938.22, 169,640.70 and 69,221.86

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Solution

The fourth proportional to 122,938.22, 169,640.70 and 69,221.86 is: 95,518.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,938.22 : 169,640.70 = 69,221.86 : x
  2. Step 2: Convert to fraction form
    122,938.22/169,640.70 = 69,221.86/x
  3. Step 3: Cross multiply
    122,938.22x = 169,640.70 × 69,221.86
  4. Step 4: Simplify right side
    122,938.22x = 11,742,844,785.70
  5. Step 5: Solve for x
    x = 11,742,844,785.70/122,938.22
  6. Step 6: Final answer
    x = 95,518.26

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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.