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Finding the Fourth Proportional to 187,099.94, 280,521.81 and 67,154.23

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Solution

The fourth proportional to 187,099.94, 280,521.81 and 67,154.23 is: 100,685.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,099.94 : 280,521.81 = 67,154.23 : x
  2. Step 2: Convert to fraction form
    187,099.94/280,521.81 = 67,154.23/x
  3. Step 3: Cross multiply
    187,099.94x = 280,521.81 × 67,154.23
  4. Step 4: Simplify right side
    187,099.94x = 18,838,224,410.38
  5. Step 5: Solve for x
    x = 18,838,224,410.38/187,099.94
  6. Step 6: Final answer
    x = 100,685.36

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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.