Home / 168,821.21-253,138.32-69,051.46

Finding the Fourth Proportional to 168,821.21, 253,138.32 and 69,051.46

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Solution

The fourth proportional to 168,821.21, 253,138.32 and 69,051.46 is: 103,538.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,821.21 : 253,138.32 = 69,051.46 : x
  2. Step 2: Convert to fraction form
    168,821.21/253,138.32 = 69,051.46/x
  3. Step 3: Cross multiply
    168,821.21x = 253,138.32 × 69,051.46
  4. Step 4: Simplify right side
    168,821.21x = 17,479,570,577.95
  5. Step 5: Solve for x
    x = 17,479,570,577.95/168,821.21
  6. Step 6: Final answer
    x = 103,538.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.