Home / 124,679.25-172,113.99-79,419.27

Finding the Fourth Proportional to 124,679.25, 172,113.99 and 79,419.27

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Solution

The fourth proportional to 124,679.25, 172,113.99 and 79,419.27 is: 109,634.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,679.25 : 172,113.99 = 79,419.27 : x
  2. Step 2: Convert to fraction form
    124,679.25/172,113.99 = 79,419.27/x
  3. Step 3: Cross multiply
    124,679.25x = 172,113.99 × 79,419.27
  4. Step 4: Simplify right side
    124,679.25x = 13,669,167,442.59
  5. Step 5: Solve for x
    x = 13,669,167,442.59/124,679.25
  6. Step 6: Final answer
    x = 109,634.66

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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.