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Finding the Fourth Proportional to 128,569.67, 192,978.89 and 62,056.62

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Solution

The fourth proportional to 128,569.67, 192,978.89 and 62,056.62 is: 93,144.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,569.67 : 192,978.89 = 62,056.62 : x
  2. Step 2: Convert to fraction form
    128,569.67/192,978.89 = 62,056.62/x
  3. Step 3: Cross multiply
    128,569.67x = 192,978.89 × 62,056.62
  4. Step 4: Simplify right side
    128,569.67x = 11,975,617,644.75
  5. Step 5: Solve for x
    x = 11,975,617,644.75/128,569.67
  6. Step 6: Final answer
    x = 93,144.97

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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.