Home / 124,979.64-172,471.89-68,391

Finding the Fourth Proportional to 124,979.64, 172,471.89 and 68,391

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Solution

The fourth proportional to 124,979.64, 172,471.89 and 68,391 is: 94,379.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,979.64 : 172,471.89 = 68,391 : x
  2. Step 2: Convert to fraction form
    124,979.64/172,471.89 = 68,391/x
  3. Step 3: Cross multiply
    124,979.64x = 172,471.89 × 68,391
  4. Step 4: Simplify right side
    124,979.64x = 11,795,525,028.99
  5. Step 5: Solve for x
    x = 11,795,525,028.99/124,979.64
  6. Step 6: Final answer
    x = 94,379.57

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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.