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Finding the Fourth Proportional to 187,057.69, 280,586.54 and 68,677.81

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Solution

The fourth proportional to 187,057.69, 280,586.54 and 68,677.81 is: 103,016.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,057.69 : 280,586.54 = 68,677.81 : x
  2. Step 2: Convert to fraction form
    187,057.69/280,586.54 = 68,677.81/x
  3. Step 3: Cross multiply
    187,057.69x = 280,586.54 × 68,677.81
  4. Step 4: Simplify right side
    187,057.69x = 19,270,069,082.68
  5. Step 5: Solve for x
    x = 19,270,069,082.68/187,057.69
  6. Step 6: Final answer
    x = 103,016.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.