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Finding the Fourth Proportional to 128,793.60, 193,230.90 and 62,235.90

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Solution

The fourth proportional to 128,793.60, 193,230.90 and 62,235.90 is: 93,373.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,793.60 : 193,230.90 = 62,235.90 : x
  2. Step 2: Convert to fraction form
    128,793.60/193,230.90 = 62,235.90/x
  3. Step 3: Cross multiply
    128,793.60x = 193,230.90 × 62,235.90
  4. Step 4: Simplify right side
    128,793.60x = 12,025,898,969.31
  5. Step 5: Solve for x
    x = 12,025,898,969.31/128,793.60
  6. Step 6: Final answer
    x = 93,373.42

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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.