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Finding the Fourth Proportional to 127,866.80, 191,857.80 and 61,281.20

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Solution

The fourth proportional to 127,866.80, 191,857.80 and 61,281.20 is: 91,949.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,866.80 : 191,857.80 = 61,281.20 : x
  2. Step 2: Convert to fraction form
    127,866.80/191,857.80 = 61,281.20/x
  3. Step 3: Cross multiply
    127,866.80x = 191,857.80 × 61,281.20
  4. Step 4: Simplify right side
    127,866.80x = 11,757,276,213.36
  5. Step 5: Solve for x
    x = 11,757,276,213.36/127,866.80
  6. Step 6: Final answer
    x = 91,949.41

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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.