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Finding the Fourth Proportional to 128,569.60, 192,978.90 and 62,056.44

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Solution

The fourth proportional to 128,569.60, 192,978.90 and 62,056.44 is: 93,144.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,569.60 : 192,978.90 = 62,056.44 : x
  2. Step 2: Convert to fraction form
    128,569.60/192,978.90 = 62,056.44/x
  3. Step 3: Cross multiply
    128,569.60x = 192,978.90 × 62,056.44
  4. Step 4: Simplify right side
    128,569.60x = 11,975,583,529.12
  5. Step 5: Solve for x
    x = 11,975,583,529.12/128,569.60
  6. Step 6: Final answer
    x = 93,144.75

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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.