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Finding the Fourth Proportional to 127,889.60, 192,064.80 and 92,868.80

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Solution

The fourth proportional to 127,889.60, 192,064.80 and 92,868.80 is: 139,470.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,889.60 : 192,064.80 = 92,868.80 : x
  2. Step 2: Convert to fraction form
    127,889.60/192,064.80 = 92,868.80/x
  3. Step 3: Cross multiply
    127,889.60x = 192,064.80 × 92,868.80
  4. Step 4: Simplify right side
    127,889.60x = 17,836,827,498.24
  5. Step 5: Solve for x
    x = 17,836,827,498.24/127,889.60
  6. Step 6: Final answer
    x = 139,470.51

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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.