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Finding the Fourth Proportional to 138,127.70, 207,144.44 and 53,881.22

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Solution

The fourth proportional to 138,127.70, 207,144.44 and 53,881.22 is: 80,803.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,127.70 : 207,144.44 = 53,881.22 : x
  2. Step 2: Convert to fraction form
    138,127.70/207,144.44 = 53,881.22/x
  3. Step 3: Cross multiply
    138,127.70x = 207,144.44 × 53,881.22
  4. Step 4: Simplify right side
    138,127.70x = 11,161,194,242.40
  5. Step 5: Solve for x
    x = 11,161,194,242.40/138,127.70
  6. Step 6: Final answer
    x = 80,803.45

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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.