Home / 151,743.21-209,405.64-83,760.21

Finding the Fourth Proportional to 151,743.21, 209,405.64 and 83,760.21

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Solution

The fourth proportional to 151,743.21, 209,405.64 and 83,760.21 is: 115,589.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,743.21 : 209,405.64 = 83,760.21 : x
  2. Step 2: Convert to fraction form
    151,743.21/209,405.64 = 83,760.21/x
  3. Step 3: Cross multiply
    151,743.21x = 209,405.64 × 83,760.21
  4. Step 4: Simplify right side
    151,743.21x = 17,539,860,381.58
  5. Step 5: Solve for x
    x = 17,539,860,381.58/151,743.21
  6. Step 6: Final answer
    x = 115,589.10

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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.