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Finding the Fourth Proportional to 127,887, 191,908.26 and 54,015

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Solution

The fourth proportional to 127,887, 191,908.26 and 54,015 is: 81,055.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,887 : 191,908.26 = 54,015 : x
  2. Step 2: Convert to fraction form
    127,887/191,908.26 = 54,015/x
  3. Step 3: Cross multiply
    127,887x = 191,908.26 × 54,015
  4. Step 4: Simplify right side
    127,887x = 10,365,924,663.90
  5. Step 5: Solve for x
    x = 10,365,924,663.90/127,887
  6. Step 6: Final answer
    x = 81,055.34

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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.