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Finding the Fourth Proportional to 114,564.60, 171,846.90 and 79,135.20

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Solution

The fourth proportional to 114,564.60, 171,846.90 and 79,135.20 is: 118,702.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,564.60 : 171,846.90 = 79,135.20 : x
  2. Step 2: Convert to fraction form
    114,564.60/171,846.90 = 79,135.20/x
  3. Step 3: Cross multiply
    114,564.60x = 171,846.90 × 79,135.20
  4. Step 4: Simplify right side
    114,564.60x = 13,599,138,800.88
  5. Step 5: Solve for x
    x = 13,599,138,800.88/114,564.60
  6. Step 6: Final answer
    x = 118,702.80

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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.