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Finding the Fourth Proportional to 89,960.68, 124,129.38 and 63,185

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Solution

The fourth proportional to 89,960.68, 124,129.38 and 63,185 is: 87,183.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,960.68 : 124,129.38 = 63,185 : x
  2. Step 2: Convert to fraction form
    89,960.68/124,129.38 = 63,185/x
  3. Step 3: Cross multiply
    89,960.68x = 124,129.38 × 63,185
  4. Step 4: Simplify right side
    89,960.68x = 7,843,114,875.30
  5. Step 5: Solve for x
    x = 7,843,114,875.30/89,960.68
  6. Step 6: Final answer
    x = 87,183.81

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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.