Home / 124,738.53-172,139.18-68,149.91

Finding the Fourth Proportional to 124,738.53, 172,139.18 and 68,149.91

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Solution

The fourth proportional to 124,738.53, 172,139.18 and 68,149.91 is: 94,046.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,738.53 : 172,139.18 = 68,149.91 : x
  2. Step 2: Convert to fraction form
    124,738.53/172,139.18 = 68,149.91/x
  3. Step 3: Cross multiply
    124,738.53x = 172,139.18 × 68,149.91
  4. Step 4: Simplify right side
    124,738.53x = 11,731,268,423.03
  5. Step 5: Solve for x
    x = 11,731,268,423.03/124,738.53
  6. Step 6: Final answer
    x = 94,046.87

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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.