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Finding the Fourth Proportional to 127,260, 190,858.46 and 43,018.29

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Solution

The fourth proportional to 127,260, 190,858.46 and 43,018.29 is: 64,516.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,260 : 190,858.46 = 43,018.29 : x
  2. Step 2: Convert to fraction form
    127,260/190,858.46 = 43,018.29/x
  3. Step 3: Cross multiply
    127,260x = 190,858.46 × 43,018.29
  4. Step 4: Simplify right side
    127,260x = 8,210,404,366.14
  5. Step 5: Solve for x
    x = 8,210,404,366.14/127,260
  6. Step 6: Final answer
    x = 64,516.77

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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.