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Finding the Fourth Proportional to 127,053, 190,579.50 and 53,181

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Solution

The fourth proportional to 127,053, 190,579.50 and 53,181 is: 79,771.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,053 : 190,579.50 = 53,181 : x
  2. Step 2: Convert to fraction form
    127,053/190,579.50 = 53,181/x
  3. Step 3: Cross multiply
    127,053x = 190,579.50 × 53,181
  4. Step 4: Simplify right side
    127,053x = 10,135,208,389.50
  5. Step 5: Solve for x
    x = 10,135,208,389.50/127,053
  6. Step 6: Final answer
    x = 79,771.50

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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.