Home / 122,969.03-169,775.61-100,361.94

Finding the Fourth Proportional to 122,969.03, 169,775.61 and 100,361.94

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Solution

The fourth proportional to 122,969.03, 169,775.61 and 100,361.94 is: 138,563.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,969.03 : 169,775.61 = 100,361.94 : x
  2. Step 2: Convert to fraction form
    122,969.03/169,775.61 = 100,361.94/x
  3. Step 3: Cross multiply
    122,969.03x = 169,775.61 × 100,361.94
  4. Step 4: Simplify right side
    122,969.03x = 17,039,010,421.86
  5. Step 5: Solve for x
    x = 17,039,010,421.86/122,969.03
  6. Step 6: Final answer
    x = 138,563.43

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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.