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Finding the Fourth Proportional to 99,173.01, 136,824.55 and 63,383.97

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Solution

The fourth proportional to 99,173.01, 136,824.55 and 63,383.97 is: 87,448.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,173.01 : 136,824.55 = 63,383.97 : x
  2. Step 2: Convert to fraction form
    99,173.01/136,824.55 = 63,383.97/x
  3. Step 3: Cross multiply
    99,173.01x = 136,824.55 × 63,383.97
  4. Step 4: Simplify right side
    99,173.01x = 8,672,483,172.46
  5. Step 5: Solve for x
    x = 8,672,483,172.46/99,173.01
  6. Step 6: Final answer
    x = 87,448.02

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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.