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Finding the Fourth Proportional to 187,084.55, 280,737.54 and 68,838.93

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Solution

The fourth proportional to 187,084.55, 280,737.54 and 68,838.93 is: 103,299.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,084.55 : 280,737.54 = 68,838.93 : x
  2. Step 2: Convert to fraction form
    187,084.55/280,737.54 = 68,838.93/x
  3. Step 3: Cross multiply
    187,084.55x = 280,737.54 × 68,838.93
  4. Step 4: Simplify right side
    187,084.55x = 19,325,671,864.43
  5. Step 5: Solve for x
    x = 19,325,671,864.43/187,084.55
  6. Step 6: Final answer
    x = 103,299.13

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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.