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Finding the Fourth Proportional to 140,332.80, 193,662 and 76,674.60

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Solution

The fourth proportional to 140,332.80, 193,662 and 76,674.60 is: 105,812.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,332.80 : 193,662 = 76,674.60 : x
  2. Step 2: Convert to fraction form
    140,332.80/193,662 = 76,674.60/x
  3. Step 3: Cross multiply
    140,332.80x = 193,662 × 76,674.60
  4. Step 4: Simplify right side
    140,332.80x = 14,848,956,385.20
  5. Step 5: Solve for x
    x = 14,848,956,385.20/140,332.80
  6. Step 6: Final answer
    x = 105,812.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.