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Finding the Fourth Proportional to 127,801.80, 191,725.74 and 43,557.30

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Solution

The fourth proportional to 127,801.80, 191,725.74 and 43,557.30 is: 65,343.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,801.80 : 191,725.74 = 43,557.30 : x
  2. Step 2: Convert to fraction form
    127,801.80/191,725.74 = 43,557.30/x
  3. Step 3: Cross multiply
    127,801.80x = 191,725.74 × 43,557.30
  4. Step 4: Simplify right side
    127,801.80x = 8,351,055,574.90
  5. Step 5: Solve for x
    x = 8,351,055,574.90/127,801.80
  6. Step 6: Final answer
    x = 65,343.80

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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.