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Finding the Fourth Proportional to 114,289.60, 171,628.80 and 84,740.80

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Solution

The fourth proportional to 114,289.60, 171,628.80 and 84,740.80 is: 127,255.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,289.60 : 171,628.80 = 84,740.80 : x
  2. Step 2: Convert to fraction form
    114,289.60/171,628.80 = 84,740.80/x
  3. Step 3: Cross multiply
    114,289.60x = 171,628.80 × 84,740.80
  4. Step 4: Simplify right side
    114,289.60x = 14,543,961,815.04
  5. Step 5: Solve for x
    x = 14,543,961,815.04/114,289.60
  6. Step 6: Final answer
    x = 127,255.34

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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.