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Finding the Fourth Proportional to 127,259.90, 190,890.41 and 43,020.51

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Solution

The fourth proportional to 127,259.90, 190,890.41 and 43,020.51 is: 64,530.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,259.90 : 190,890.41 = 43,020.51 : x
  2. Step 2: Convert to fraction form
    127,259.90/190,890.41 = 43,020.51/x
  3. Step 3: Cross multiply
    127,259.90x = 190,890.41 × 43,020.51
  4. Step 4: Simplify right side
    127,259.90x = 8,212,202,792.31
  5. Step 5: Solve for x
    x = 8,212,202,792.31/127,259.90
  6. Step 6: Final answer
    x = 64,530.95

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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.