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Finding the Fourth Proportional to 127,999.70, 191,891.10 and 53,073.08

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Solution

The fourth proportional to 127,999.70, 191,891.10 and 53,073.08 is: 79,564.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,999.70 : 191,891.10 = 53,073.08 : x
  2. Step 2: Convert to fraction form
    127,999.70/191,891.10 = 53,073.08/x
  3. Step 3: Cross multiply
    127,999.70x = 191,891.10 × 53,073.08
  4. Step 4: Simplify right side
    127,999.70x = 10,184,252,181.32
  5. Step 5: Solve for x
    x = 10,184,252,181.32/127,999.70
  6. Step 6: Final answer
    x = 79,564.66

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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.