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Finding the Fourth Proportional to 99,749.93, 137,654.90 and 63,940.01

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Solution

The fourth proportional to 99,749.93, 137,654.90 and 63,940.01 is: 88,237.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,749.93 : 137,654.90 = 63,940.01 : x
  2. Step 2: Convert to fraction form
    99,749.93/137,654.90 = 63,940.01/x
  3. Step 3: Cross multiply
    99,749.93x = 137,654.90 × 63,940.01
  4. Step 4: Simplify right side
    99,749.93x = 8,801,655,154.12
  5. Step 5: Solve for x
    x = 8,801,655,154.12/99,749.93
  6. Step 6: Final answer
    x = 88,237.21

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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.