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Finding the Fourth Proportional to 99,996.90, 137,997.72 and 54,677.72

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Solution

The fourth proportional to 99,996.90, 137,997.72 and 54,677.72 is: 75,456.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,996.90 : 137,997.72 = 54,677.72 : x
  2. Step 2: Convert to fraction form
    99,996.90/137,997.72 = 54,677.72/x
  3. Step 3: Cross multiply
    99,996.90x = 137,997.72 × 54,677.72
  4. Step 4: Simplify right side
    99,996.90x = 7,545,400,004.81
  5. Step 5: Solve for x
    x = 7,545,400,004.81/99,996.90
  6. Step 6: Final answer
    x = 75,456.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.