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Finding the Fourth Proportional to 124,821, 172,252.98 and 68,232.78

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Solution

The fourth proportional to 124,821, 172,252.98 and 68,232.78 is: 94,161.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,821 : 172,252.98 = 68,232.78 : x
  2. Step 2: Convert to fraction form
    124,821/172,252.98 = 68,232.78/x
  3. Step 3: Cross multiply
    124,821x = 172,252.98 × 68,232.78
  4. Step 4: Simplify right side
    124,821x = 11,753,299,688.68
  5. Step 5: Solve for x
    x = 11,753,299,688.68/124,821
  6. Step 6: Final answer
    x = 94,161.24

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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.