Home / 124,805.41-172,231.55-68,216.78

Finding the Fourth Proportional to 124,805.41, 172,231.55 and 68,216.78

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Solution

The fourth proportional to 124,805.41, 172,231.55 and 68,216.78 is: 94,139.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,805.41 : 172,231.55 = 68,216.78 : x
  2. Step 2: Convert to fraction form
    124,805.41/172,231.55 = 68,216.78/x
  3. Step 3: Cross multiply
    124,805.41x = 172,231.55 × 68,216.78
  4. Step 4: Simplify right side
    124,805.41x = 11,749,082,356.53
  5. Step 5: Solve for x
    x = 11,749,082,356.53/124,805.41
  6. Step 6: Final answer
    x = 94,139.21

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1.5x scale

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.