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Finding the Fourth Proportional to 127,228.80, 190,717.65 and 71,095.80

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Solution

The fourth proportional to 127,228.80, 190,717.65 and 71,095.80 is: 106,573.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,228.80 : 190,717.65 = 71,095.80 : x
  2. Step 2: Convert to fraction form
    127,228.80/190,717.65 = 71,095.80/x
  3. Step 3: Cross multiply
    127,228.80x = 190,717.65 × 71,095.80
  4. Step 4: Simplify right side
    127,228.80x = 13,559,223,900.87
  5. Step 5: Solve for x
    x = 13,559,223,900.87/127,228.80
  6. Step 6: Final answer
    x = 106,573.54

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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.