Home / 123,731.09-170,749.37-67,142.47

Finding the Fourth Proportional to 123,731.09, 170,749.37 and 67,142.47

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Solution

The fourth proportional to 123,731.09, 170,749.37 and 67,142.47 is: 92,656.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,731.09 : 170,749.37 = 67,142.47 : x
  2. Step 2: Convert to fraction form
    123,731.09/170,749.37 = 67,142.47/x
  3. Step 3: Cross multiply
    123,731.09x = 170,749.37 × 67,142.47
  4. Step 4: Simplify right side
    123,731.09x = 11,464,534,452.74
  5. Step 5: Solve for x
    x = 11,464,534,452.74/123,731.09
  6. Step 6: Final answer
    x = 92,656.86

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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.