Home / 124,720.56-172,116.90-68,135.58

Finding the Fourth Proportional to 124,720.56, 172,116.90 and 68,135.58

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Solution

The fourth proportional to 124,720.56, 172,116.90 and 68,135.58 is: 94,028.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,720.56 : 172,116.90 = 68,135.58 : x
  2. Step 2: Convert to fraction form
    124,720.56/172,116.90 = 68,135.58/x
  3. Step 3: Cross multiply
    124,720.56x = 172,116.90 × 68,135.58
  4. Step 4: Simplify right side
    124,720.56x = 11,727,284,809.30
  5. Step 5: Solve for x
    x = 11,727,284,809.30/124,720.56
  6. Step 6: Final answer
    x = 94,028.48

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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.